Improvements

Rook v1.8.4 is a patch release limited in scope and focusing on small feature additions and bug fixes to the Ceph operator.

• csi: Skip validation when installing snapshotter (#9672, @Madhu-1)
• subvolumegroup: Handle external mode (#9694, @leseb)
• rgw: Gateway deployment strategy RollingUpdate on Pacific (#9578, @micalgenus)
• core: Dereference pointer before trying to compare with deepequal (#9663, @leseb)
• osd: Merge all osd resources including custom (#9658, @travisn)
• csi: bump csi snapshotter image to v5 (#9665, @Madhu-1)
• helm: add annotations and labels for VolumeSnapshotClasses (#9661, @Madhu-1)
• csi: Bump csi resizer and volume replication images (#9651, @sathieu)
• osd: Allow injecting extra OSD environment variables via ConfigMap (#9647, @rzarzynski)
• pool: Check for pool application already being set (#9649, @travisn)
• helm: Update CI to the latest helm and fix the linter (#9642, @travisn)
• rgw: Inject tls certs for bucket notification and topic operations (#9565, @thotz)
• rgw: Handle the non-existence of the bucket correctly when removing bucket (#9603, @cupnes)