Description of problem:

host deploy is trying to stop/start firewalld when running on rhel
rhel doesn't have firewalld therefore host deploy fails

host-deploy log snippet

2013-07-04 12:35:43 DEBUG otopi.plugins.otopi.services.rhel plugin.execute:446 execute-output: ('/sbin/service', 'firewalld', 'start') stderr:
firewalld: unrecognized service

2013-07-04 12:35:43 DEBUG otopi.context context._executeMethod:132 method exception
Traceback (most recent call last):
  File "/tmp/ovirt-oVvTxX9x0e/pythonlib/otopi/context.py", line 122, in _executeMethod
    method['method']()
  File "/tmp/ovirt-oVvTxX9x0e/otopi-plugins/otopi/network/firewalld.py", line 142, in _customization
    self._firewalld_version = self._get_firewalld_cmd_version()
  File "/tmp/ovirt-oVvTxX9x0e/otopi-plugins/otopi/network/firewalld.py", line 63, in _get_firewalld_cmd_version
    state=True,
  File "/tmp/ovirt-oVvTxX9x0e/otopi-plugins/otopi/services/rhel.py", line 188, in state
    'start' if state else 'stop'
  File "/tmp/ovirt-oVvTxX9x0e/otopi-plugins/otopi/services/rhel.py", line 96, in _executeServiceCommand
    raiseOnError=raiseOnError
  File "/tmp/ovirt-oVvTxX9x0e/pythonlib/otopi/plugin.py", line 451, in execute
    command=args[0],
RuntimeError: Command '/sbin/service' failed to execute