BZ #1175869 - Add generic pcs create wrapper for juno.

https://bugzilla.redhat.com/show_bug.cgi?id=1175869

This adds:
- the initial wrapper to allow us to call commands as needed for juno +
  pacemaker (syntax not yet supported in puppet-pacemaker, we can remove when and
  if it gets in there).
- neutron-server to create its resource with the wrapper.