Test diagnostics #463

Job	Run time
diagnostic_aggregator on humble	3m 36s
diagnostic_aggregator on iron	3m 57s
diagnostic_aggregator on rolling	3m 23s
diagnostic_common_diagnostics on humble	3m 1s
diagnostic_common_diagnostics on iron	3m 43s
diagnostic_common_diagnostics on rolling	3m 42s
diagnostic_updater on humble	4m 1s
diagnostic_updater on iron	3m 46s
diagnostic_updater on rolling	3m 26s
self_test on humble	3m 39s
self_test on iron	3m 40s
self_test on rolling	3m 44s
	43m 38s

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