[Mobile Config] Add updated_at to GatewayInfoV2 (response) (#921) #665

Job	Run time
clippy	2m 18s
build	2m 45s
fmt	14s
tests (coverage-point-calculator)	1m 20s
tests (coverage-map)	1m 25s
tests (ingest)	1m 50s
tests (reward-scheduler)	1m 5s
tests (task-manager)	1m 15s
tests-postgres (boost-manager)	2m 43s
tests-postgres (file-store)	2m 14s
tests-postgres (iot-config)	2m 51s
tests-postgres (iot-packet-verifier)	3m 54s
tests-postgres (iot-verifier)	2m 40s
tests-postgres (mobile-config)	2m 41s
tests-postgres (mobile-packet-verifier)	2m 37s
tests-postgres (mobile-verifier)	2m 43s
build-release	9m 20s
	43m 55s

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