[Mobile config] Add v2 endpoints to GatewayInfoV2. Change `min_refreshed_at` to `min_updated_at` #584

Job	Run time
build	5m 6s
fmt	3s
clippy	1m 57s
tests (reward-scheduler)	45s
tests (coverage-map)	1m 16s
tests (coverage-point-calculator)	1m 23s
tests (ingest)	1m 53s
tests (task-manager)	50s
tests-postgres (boost-manager)	2m 29s
tests-postgres (file-store)	2m 8s
tests-postgres (iot-config)	2m 44s
tests-postgres (iot-packet-verifier)	3m 27s
tests-postgres (iot-verifier)	2m 49s
tests-postgres (mobile-config)	2m 11s
tests-postgres (mobile-packet-verifier)	2m 21s
tests-postgres (mobile-verifier)	3m 1s
build-release	0s
	34m 23s

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