Merge pull request #70229 from Sodani/shsodani_exo_fix

mgr/smb: add support for RGW shares with external Ceph clusters

Reviewed-by: Avan Thakkar <athakkar@redhat.com>
Reviewed-by: Anoop C S <anoopcs@cryptolab.net>
Reviewed-by: John Mulligan <jmulligan@redhat.com>