considering many PV sources exist today with secretRef fields
this introduce a secretRef validation function which could be
used based on the pv spec source type. There are different field
restrictions exist today for these PV types like some of them
dont need namespace reference..etc. The PV spec validation has
to be adjusted for different PVs, but this commit try to make
use of this newly introduced secretRef validation function for
CSI volume source.
Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
49833aaae3