Merge pull request #21129 from oritwas/wip-rgw-admin-no-cache

rgw: radosgw-admin should not use metadata cache for readonly commands

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

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

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

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

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