Revert change lb group to use namespace delete and add #2434

Job	Run time
build	9m 17s
build-arm64	1h 3m 41s
build-ceph	1m 56s
discovery (container)	3m 53s
demo	3m 55s
discovery (embedded)	3m 41s
demo-secure	4m 4s
ha (sanity)	4m 2s
ha (state_transitions)	4m 37s
pytest (cli)	2m 10s
atom	33m 17s
ha (state_transitions_both_gws)	6m 18s
pytest (cli_change_lb)	2m 32s
ha (state_transitions_loop)	20m 58s
pytest (state)	2m 20s
ha (state_transitions_rand_loop)	28m 48s
pytest (multi_gateway)	2m 28s
ha (late_registration)	4m 47s
pytest (server)	2m 44s
ha (late_registration_loop)	10m 24s
pytest (grpc)	2m 37s
ha (4gws)	8m 51s
pytest (omap_lock)	3m 26s
ha (4gws_loop)	20m 29s
pytest (old_omap)	2m 1s
ha (4gws_create_delete)	8m 51s
pytest (log_files)	3m 7s
ha (4gws_create_delete_loop)	11m 4s
pytest (nsid)	2m 59s
ha (namespaces)	12m 14s
pytest (psk)	2m 26s
ha (namespaces_loop)	21m 52s
ha (mtls)	3m 38s
ha (notify)	2m 13s
ha (ceph_status)	2m 23s
push-images-to-ceph-registry	0s
	5h 24m 3s

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