rename netvirt jobs and create new gating jobs

rename netvirt jobs and create new gating jobs

- jobs that use odl-ovsdb-openstack as their feature should now be using
  the name netvirt-legacy
- jobs that are using odl-netvirt-openstack are now changed from
  netvirt-vpnservice to just netvirt.
- all "periodic" (e.g. daily) CSIT should now have a duplicate
  job with the string "gate" in it's name and those jobs will not
  run periodically
- all patch test jobs will now use the "gate" job.  This allows
  for WIP netvirt patches to run the CSIT without polluting the
  normal CSIT with failures

Change-Id: I4e7624be053f5b11937825747ae79d8a95f094c6
Signed-off-by: Jamo Luhrsen <jluhrsen@redhat.com>