Test diagnostics #473

Job	Run time
diagnostic_aggregator on humble	4m 0s
diagnostic_aggregator on iron	4m 15s
diagnostic_aggregator on rolling	4m 8s
diagnostic_common_diagnostics on humble	3m 53s
diagnostic_common_diagnostics on iron	3m 58s
diagnostic_common_diagnostics on rolling	3m 26s
diagnostic_updater on humble	3m 4s
diagnostic_updater on iron	3m 44s
diagnostic_updater on rolling	2m 57s
self_test on humble	3m 36s
self_test on iron	3m 27s
self_test on rolling	3m 48s
	44m 16s

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