spdk: per-host namespace masking #660

Job	Run time
build	9m 15s
build-ceph	2m 20s
pytest (cli)	2m 15s
demo	3m 49s
pytest (state)	2m 27s
pytest (multi_gateway)	2m 39s
ha (sanity)	3m 59s
discovery (container)	4m 1s
pytest (server)	2m 38s
ha (state_transitions)	3m 32s
discovery (embedded)	3m 45s
pytest (grpc)	2m 40s
ha (state_transitions_both_gws)	4m 45s
pytest (omap_lock)	3m 46s
pytest (old_omap)	2m 8s
ha (state_transitions_loop)	12m 17s
pytest (log_files)	3m 37s
ha (state_transitions_rand_loop)	15m 13s
pytest (nsid)	3m 0s
ha (late_registration)	3m 47s
ha (late_registration_loop)	15m 21s
pytest (namespaces)	11m 56s
ha (4gws)	5m 37s
ha (4gws_loop)	7m 0s
push-to-registry	0s
	2h 11m 47s

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