[Mobile config] Add v2 endpoints to GatewayInfoV2. Change `min_refreshed_at` to `min_updated_at` #591

Job	Run time
build	2m 12s
clippy	1m 55s
fmt	5s
tests (coverage-map)	1m 15s
tests (coverage-point-calculator)	1m 17s
tests (ingest)	1m 50s
tests (reward-scheduler)	47s
tests (task-manager)	1m 11s
tests-postgres (boost-manager)	2m 25s
tests-postgres (iot-config)	2m 23s
tests-postgres (mobile-config)	2m 32s
tests-postgres (iot-packet-verifier)	3m 22s
tests-postgres (iot-verifier)	2m 29s
tests-postgres (file-store)	2m 22s
tests-postgres (mobile-packet-verifier)	2m 21s
tests-postgres (mobile-verifier)	3m 9s
build-release	0s
	31m 35s

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