testing related tweaks #676

Job	Run time
build	5m 23s
clippy	2m 43s
fmt	7s
tests (coverage-map)	1m 31s
tests (coverage-point-calculator)	1m 40s
tests (ingest)	2m 12s
tests (reward-scheduler)	46s
tests (task-manager)	1m 27s
tests-postgres (boost-manager)	2m 45s
tests-postgres (file-store)	2m 25s
tests-postgres (iot-config)	2m 48s
tests-postgres (iot-packet-verifier)	3m 51s
tests-postgres (iot-verifier)	2m 43s
tests-postgres (mobile-config)	2m 55s
tests-postgres (mobile-packet-verifier)	2m 50s
tests-postgres (mobile-verifier)	3m 16s
build-release	15m 27s
	54m 49s

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