Tag the ha containers with 'pcmklatest' at deploy time

Tag the ha containers with 'pcmklatest' at deploy time

We need to tag the HA containers with a special tag so
that the RA definition never changes. We do this step in THT
as opposed to puppet because we need to guarantee
that all images are tagged on all nodes *before* step 2 where the bundle
gets created.

NB: Getting the image name without the tag will require some more
yaql work to get all the cases right. Right now this works only
if we enforce that the image has a ':tag' at the end of the name.
So far this is always the case. If things change we will need to
amend this code.

Co-Authored-By: Damien Ciabrini <dciabrin@redhat.com>
Co-Authored-By: Sofer Athlan-Guyot <sathlang@redhat.com>
Change-Id: I362e6cf26fba77d3f949b7d2fc4b35a3eab9087e