Catch SPDK exceptions in Prometheus #1690

Job	Run time
build	9m 19s
build-ceph	2m 28s
pytest (cli)	2m 29s
discovery (container)	3m 59s
pytest (cli_change_lb)	2m 35s
discovery (embedded)	3m 44s
ha (sanity)	3m 54s
pytest (state)	2m 35s
demo	5m 11s
ha (state_transitions)	3m 31s
pytest (multi_gateway)	2m 19s
ha (state_transitions_both_gws)	4m 26s
pytest (server)	2m 59s
ha (state_transitions_loop)	11m 52s
pytest (grpc)	2m 49s
ha (state_transitions_rand_loop)	13m 40s
pytest (omap_lock)	4m 44s
ha (late_registration)	4m 23s
pytest (old_omap)	2m 20s
ha (late_registration_loop)	14m 32s
pytest (log_files)	3m 30s
ha (4gws)	5m 51s
pytest (nsid)	3m 47s
ha (4gws_loop)	7m 13s
pytest (namespaces)	11m 39s
push-to-registry	0s
	2h 15m 49s

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