Merge pull request #45423 from cfsnyder/wip-50802-octopus

octopus: radosgw-admin: skip GC init on read-only admin ops

Reviewed-by: Casey Bodley <cbodley@redhat.com>

diff --cc src/rgw/rgw_admin.cc
Simple merge

diff --cc src/rgw/rgw_rados.cc
Simple merge

diff --cc src/rgw/rgw_sal.cc
Simple merge

diff --cc src/rgw/rgw_sal.h
Simple merge