Improvements

Rook v1.4.8 is a patch release limited in scope and focusing on small feature additions and bug fixes.

Ceph

• Update base operator image and example manifests to Ceph v15.2.7 (#6690, @travisn)
• Merge custom labels properly with other labels in the spec (#6720, @galexrt)
• Uninstall cleanup ignores ceph daemon pods that are in pending state (#6719, @sp98)
• Orchestration is aborted and restarted if the cluster CR is updated (#6693, @leseb)
• Restore mon clusterIP if the service is missing in disaster recovery scenarios (#6658, @travisn)
• Set the RGW deployment version label (#6610, @BlaineEXE)
• Add privileged securityContext to CephFS provisioner (#6561, @Madhu-1)