Description of problem:

 The capsule installation fails when the system is already registered to the Satellite server and to the Puppet master. 
 
 Before running the capsule installer puppet agent is already configured and working. 
 
    [root@capsulexx ~]# puppet  agent -tv 
    Info: Retrieving plugin
    Error: /File[/var/lib/puppet/lib]: Could not evaluate: Could not retrieve information from environment production source(s) puppet://dhcp145-230.rdu.redhat.com/plugins
    Info: Caching catalog for capsulexx.hq.gsslab.rdu.redhat.com
    Info: Applying configuration version '1422173424'
    Notice: Finished catalog run in 0.04 seconds 


Version-Release number of selected component (if applicable):
Red Hat Satellite 6.0.7


How reproducible:
100%


Steps to Reproduce:

 1. Create the SSL certificates on the Satellite server
 
    [root@dhcp145-230 ~]# capsule-certs-generate --capsule-fqdn capsulexx.usersys.redhat.com --certs-tar ~/capsulexx.usersys.redhat.com.tar

 2. Install the Capsule using the certificates created.
 
    [root@capsulexx puppet]#   capsule-installer --parent-fqdn          "dhcp145-230.rdu.redhat.com"\
>                     --register-in-foreman  "true"\
>                     --foreman-oauth-key    "2WfTrt2eC6VPsHKraRwapKr3Z2nNSfbj"\
>                     --foreman-oauth-secret "PqQ9W5WwhCgDg4cRfw5V2mmFJ382LJFJ"\
>                     --pulp-oauth-secret    "QnRMy4ejFCUAjuLHxZp6sM9bQgPHsfeU"\
>                     --certs-tar            "/root/capsulexx.usersys.redhat.com.tar"\
>                     --puppet               "true"\
>                     --puppetca             "true"\
>                     --pulp                 "true"

    system identity: 54367bd8-61b7-4d90-9d80-653c3d83b8ae
    
    [.....SNIP.....]
    
 /usr/bin/puppet cert --generate capsulexx.usersys.redhat.com returned 23 instead of one of [0]
 /Stage[main]/Puppet::Server::Config/Exec[puppet_server_config-generate_ca_cert]/returns: change from notrun to 0 failed: /usr/bin/puppet cert --generate capsulexx.usersys.redhat.com returned 23 instead of one of [0]
 /Stage[main]/Puppet::Server::Config/Exec[puppet_server_config-generate_ca_cert]: Failed to call refresh: /usr/bin/puppet cert --generate capsulexx.usersys.redhat.com returned 23 instead of one of [0]
 /Stage[main]/Puppet::Server::Config/Exec[puppet_server_config-generate_ca_cert]: /usr/bin/puppet cert --generate capsulexx.usersys.redhat.com returned 23 instead of one of [0]
Installing             Done                                               [100%] [.................................................................................................]
  Something went wrong! Check the log for ERROR-level output
  The full log is at /var/log/katello-installer/capsule-installer.log

  3. The system will fail because the puppet certificate already exists at /var/lib/puppet/ssl directory
  
[root@capsulexx puppet]# tree -ugsp /var/lib/puppet/ssl/
/var/lib/puppet/ssl/
|-- [drwxr-xr-x puppet   puppet            82]  ca
|   |-- [-rw-r----- puppet   puppet          3243]  ca_key.pem
|   |-- [-rw-r--r-- puppet   puppet           800]  ca_pub.pem
|   |-- [drwxr-x--- puppet   puppet             6]  private
|   |-- [drwxr-xr-x puppet   puppet             6]  requests
|   `-- [drwxr-xr-x puppet   puppet             6]  signed
|-- [drwxr-xr-x puppet   puppet            51]  certificate_requests
|   `-- [-rw-r--r-- puppet   puppet          1618]  capsulexx.hq.gsslab.rdu.redhat.com.pem
|-- [drwxr-xr-x puppet   puppet            64]  certs
|   |-- [-rw-r--r-- puppet   puppet          2004]  ca.pem
|   `-- [-rw-r--r-- puppet   puppet          1992]  capsulexx.hq.gsslab.rdu.redhat.com.pem
|-- [-rw-r--r-- puppet   puppet          1954]  crl.pem
|-- [drwxr-x--- puppet   puppet             6]  private
|-- [drwxr-x--- puppet   puppet            90]  private_keys
|   |-- [-rw-r----- puppet   puppet          3243]  capsulexx.hq.gsslab.rdu.redhat.com.pem
|   `-- [-rw-r----- puppet   puppet          3243]  capsulexx.usersys.redhat.com.pem
`-- [drwxr-xr-x puppet   puppet            90]  public_keys
    |-- [-rw-r--r-- puppet   puppet           800]  capsulexx.hq.gsslab.rdu.redhat.com.pem
    `-- [-rw-r--r-- puppet   puppet           800]  capsulexx.usersys.redhat.com.pem


Actual results:
  
  Capsule installation fails because the SSL certificates for puppet already exists on the deployed system


Expected results:

  The capsule installer should clean the SSL certificates or warning the user that the Puppet certificates already exists and then exist the installer or provide an option --force-clean-puppet-ssl-certificate.