Clean vbmc processes during virsh cleanup
Clean vbmc processes during virsh cleanup

vbmc processes might be hanging from previous deployments which
makes overcloud deploy fail because the nodes cannot be spawned.
This change cleans the vmbc processes during virhs cleanup stage
to avoid this kind of situation.

Change-Id: I26c352ec39c680b19440c58b36ae2b26da4f8f6b

redhat-openstack/infrared,okolisny/InfraRed,redhat-openstack/infrared,okolisny/InfraRed,redhat-openstack/infrared,okolisny/InfraRed