Merge PR #56069 into wip-root-testing-20240411.174241

* refs/pull/56069/head:
	test/rgw/notification: fix threading issue in test
	test/rgw/notification: use polling instead of sleep
	test/rgw/notification: cleanup leftover topics
	test/rgw/notification: use simpler multithreaded http server
	test/rgw/notifications: do not delay http responses to notifications
	rgw/notification: Load bucket attrs before calling publish_reserve.
	test/rgw/noitifications: run basic/http/migration tests with 2 RGWs
	rgw/notifications: run v2 migration tests in teuthology
	RGW/Rados: Migrate topics to data path v2
	rgw/notification: Support generating multisite sync delete events.
	rgw/notification: Make the Replication events to be aws compatible.
	rgw/notification: Make the Lifecycle events AWS compatible
	PendingReleaseNotes: announce the notification_v2 feature and its migration
	doc/radosgw: document the notification_v2 zone feature
	doc/radosgw: generalize description of Zone Features
	doc/radosgw: move the Zone Features section to its own page
	qa/rgw: notification suite creates a realm
	qa/rgw: teach rgw.py to create an optional realm
	rgw/notifications: delete persistent queue only if topic is deleted
	rgw/notifications: handle migration state between v1 and v2
	rgw: move rgw_rest_pubsub.h out of driver/rados/
	rgw/pubsub: topic apis forward post body
	rgw/topic: metadata handler adds/removes persistent queues
	rgw/topic: remove unused RGWSI_Topic_RADOS
	rgw/topic: add rgwrados::topic interface for topic metadata
	rgw/topic: metadata key format in rgw_pubsub.h
	rgw: paginate ListTopics
	rgw/mdlog: add complete_entry() for most common usage
	rgw/metadata: add RGWMetadataLister abstraction
	rgw: RGWPubSub requires SiteConfig
	rgw/rados: RGWTopicMetadataHandler doesn't depend on RGWPubSub
	rgw/rados: store SiteConfig with RGWServices
	radosgw-admin: make SiteConfig available to commands
	rgw/multisite-notification: allow enabling v1/v2 in tests
	test/rgw/notifications: support running tests in multisite environment
	rgw/multisite-notification: Add integration test for bucket notifications in multisite config.
	rgw/multisite-notification: Add omap object to store the mapping between bucket and topics.
	rgw/multisite-notification: Add support to replicate bucket notifications in multisite config.
	rgw/multisite-notification: Add support to replicate topic creation  in multisite config
	test/rgw/notifications: split tests between basic, kafka and amqp

diff --cc PendingReleaseNotes
Simple merge

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

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