Description of problem:
Using edit-node install ovirt-node-plugin-puppet into rhev-hypervisor7-7.0-20140807.0.iso and clean install this
iso .Login it and enter into puppet page, configure 
Puppet Serverhcp-10-88.nay.redhat.com
Puppet Certificate Name: dhcp-73-241.nay.redhat.com

after clicking "Save" button to apply this configuration. check that: 
[root@agent2 admin]# cat /etc/puppet/puppet.conf |more
[main]
    server = "dhcp-10-88.nay.redhat.com"
    certname = "dhcp-73-241.nay.redhat.com"
    # The Puppet log directory.
    # The default value is '$vardir/log'.
    logdir = /var/log/puppet
.....

But service puppet start failed:
[root@dhcp-73-241 admin]# service puppet start
Redirecting to /bin/systemctl start  puppet.service
[root@dhcp-73-241 admin]# service puppet status
Redirecting to /bin/systemctl status  puppet.service
puppet.service - Puppet agent
   Loaded: loaded (/usr/lib/systemd/system/puppet.service; disabled)
   Active: failed (Result: exit-code) since Sun 2014-08-10 07:43:26 UTC; 834ms ago
  Process: 4632 ExecStart=/usr/bin/start-puppet-agent agent ${PUPPET_EXTRA_OPTS} --no-daemonize (code=exited, status=1/FAILURE)
 Main PID: 4632 (code=exited, status=1/FAILURE)

Aug 10 07:43:25 dhcp-73-241.nay.redhat.com start-puppet-agent[4632]: Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb...irt.rb
Aug 10 07:43:25 dhcp-73-241.nay.redhat.com start-puppet-agent[4632]: Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb...irt.rb
Aug 10 07:43:25 dhcp-73-241.nay.redhat.com start-puppet-agent[4632]: Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb...irt.rb
Aug 10 07:43:25 dhcp-73-241.nay.redhat.com start-puppet-agent[4632]: Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb...irt.rb
Aug 10 07:43:25 dhcp-73-241.nay.redhat.com start-puppet-agent[4632]: Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb...irt.rb
Aug 10 07:43:25 dhcp-73-241.nay.redhat.com start-puppet-agent[4632]: Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb...irt.rb
Aug 10 07:43:26 dhcp-73-241.nay.redhat.com puppet-agent[4633]: Starting Puppet client version 3.6.2
Aug 10 07:43:26 dhcp-73-241.nay.redhat.com puppet-agent[4633]: Could not run: Could not create PID file: /var/run/puppet/agent.pid
Aug 10 07:43:26 dhcp-73-241.nay.redhat.com systemd[1]: puppet.service: main process exited, code=exited, status=1/FAILURE
Aug 10 07:43:26 dhcp-73-241.nay.redhat.com systemd[1]: Unit puppet.service entered failed state.
Hint: Some lines were ellipsized, use -l to show in full.

Also append the output of "puppet agent --test" in here:
[root@dhcp-73-241 admin]# puppet agent --test
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Notice: Using less secure serialization of reports and query parameters for compatibility
Notice: with older puppet master. To remove this notice, please upgrade your master(s) 
Notice: to Puppet 3.3 or newer.
Notice: See http://links.puppetlabs.com/deprecate_yaml_on_network for more information.
Info: Retrieving pluginfacts
Error: /File[/var/lib/puppet/facts.d]: Failed to generate additional resources using 'eval_generate': Error 400 on SERVER: Not authorized to call search on /file_metadata/pluginfacts with {:links=>"manage", :recurse=>true, :ignore=>[".svn", "CVS", ".git"], :checksum_type=>"md5"}
Error: /File[/var/lib/puppet/facts.d]: Could not evaluate: Could not retrieve file metadata for puppet://dhcp-10-88.nay.redhat.com/pluginfacts: Error 400 on SERVER: Not authorized to call find on /file_metadata/pluginfacts with {:links=>"manage", :source_permissions=>"use"}
Wrapped exception:
Error 400 on SERVER: Not authorized to call find on /file_metadata/pluginfacts with {:links=>"manage", :source_permissions=>"use"}
Info: Retrieving plugin
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Info: Caching catalog for dhcp-73-241.nay.redhat.com
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Warning: The package type's allow_virtual parameter will be changing its default value from false to true in a future release. If you do not want to allow virtual packages, please explicitly set allow_virtual to false.
   (at /usr/share/ruby/vendor_ruby/puppet/type.rb:816:in `set_default')
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Error loading fact /usr/share/ruby/vendor_ruby/facter/operatingsystem.rb: cannot load such file -- ovirt.rb
Info: Applying configuration version '1407612446'
Notice: Finished catalog run in 0.16 seconds


Version-Release number of selected component (if applicable):
rhev-hypervisor7-7.0-20140807.0.iso
ovirt-node-3.1.0-0.6.20140731git2c8e71f.el7.noarch
puppet-3.6.2-2.el7.noarch
ovirt-node-plugin-puppet-3.1.0-0.7.20140806gitef5c5cb.el7.noarch

How reproducible:
100% 
 
Steps to Reproduce:

Actual result:
service puppet start failed

Expect result:
service puppet start success

Additional info:
No this issue in the follow version
rhev-hypervisor6-6.5-20140725.0.el6ev
ovirt-node-plugin-puppet-3.0.1-18.el6.14.noarch
puppet-2.7.25-2.el6.noarch

so it's a regression bug