spdk: defensive rpc_nvmf_get_qpairs #1729

Job	Run time
build-ceph	2m 11s
build	8m 54s
discovery (container)	4m 33s
discovery (embedded)	4m 14s
ha (sanity)	4m 10s
demo	4m 9s
ha (state_transitions)	3m 28s
pytest (cli)	5m 4s
ha (state_transitions_both_gws)	4m 33s
pytest (cli_change_lb)	2m 32s
ha (state_transitions_loop)	12m 12s
pytest (state)	2m 15s
ha (state_transitions_rand_loop)	15m 8s
pytest (multi_gateway)	2m 25s
ha (late_registration)	4m 3s
pytest (server)	2m 54s
ha (late_registration_loop)	14m 47s
pytest (grpc)	3m 20s
ha (4gws)	5m 40s
pytest (omap_lock)	4m 32s
pytest (old_omap)	2m 0s
ha (4gws_loop)	7m 42s
pytest (log_files)	3m 50s
pytest (nsid)	3m 21s
pytest (namespaces)	7m 10s
push-to-registry	0s
	2h 15m 7s

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