Merge pull request #68257 from avanthakkar/add-cluster-qos-cmd

mgr/smb: add cluster-level QoS update command for CephFS shares

Reviewed-by:  Anoop C S <anoopcs@cryptolab.net>
Reviewed-by: Shwetha Acharya <sacharya@redhat.com>
Reviewed-by: John Mulligan <jmulligan@redhat.com>