[Spectrum Virtualize family] While creating a group either from
source_group or group_snapshot, the resulted group-volumes metadata
is not updated with the rccg_name attribute. This is happening due to
the order of some function calls to update volume metadata.
Providing a fix to update rccg_name property to volume metadata which
could cover all the possible cases like add a volume to the group,
create a group from source_group and create a group from group_snapshot.
Closes-Bug: #1943682
Change-Id: I0bfb79db4f69c0705a1e0fa971376d14c232d5cb
