Added further openstack-config options for RHEL and SUSE platforms

This is a second patch set for migrating the manual copy and paste
configuration file changes to using openstack-config. This completes
the Neutron section for installing on a dedicated controller,
dedicated network node and a compute host.

Change-Id: I5171c7e4573b1e95c41587a81f7c6f803f8975a3
Merge "Added further openstack-config options for RHEL and SUSE platforms"