Merge pull request #39382 from gauravsitlani/master

rgw: added missing documentation on "pubsub" in rgw_enable_apis

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

diff --cc doc/radosgw/notifications.rst
Simple merge

diff --cc doc/radosgw/pubsub-module.rst
Simple merge

diff --cc src/common/options.cc
Simple merge

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