It's not enough to silently drop the volume type if the feature is
disabled. Instead, the policy should fail validation, just as it would
have if the API server didn't know about the feature at all.
Adds "MayRunAs" value among other group strategies. This strategy
allows to define a certain range of GIDs for FSGroupStrategy and
SupplementalGroupStrategy in a PSP.
This new strategy works similarly to the "MustRunAs" one, except that
when no GID is specified in a pod/container security context then no
GID is generated for the respective containers.
Resolves#56173
We had IDRange in both types prior 9440a68744 commit that splitted it
into UserIDRange/GroupIDRange. Later, in c91a12d205 commit we had to
revert this changes because they broke backward compatibility but
UserIDRange/GroupIDRange struct left in the internal type.
This commit removes these leftovers and reduces the differences
between internal and external types.
