Ros2cli diagnostics tool #472

Job	Run time
diagnostic_aggregator on humble	3m 16s
diagnostic_aggregator on iron	5m 34s
diagnostic_aggregator on rolling	3m 20s
diagnostic_common_diagnostics on humble	3m 8s
diagnostic_common_diagnostics on iron	4m 9s
diagnostic_common_diagnostics on rolling	4m 8s
diagnostic_updater on humble	3m 5s
diagnostic_updater on iron	3m 7s
diagnostic_updater on rolling	3m 29s
ros2diagnostics on humble	2m 25s
ros2diagnostics on iron	2m 19s
ros2diagnostics on rolling	2m 59s
self_test on humble	3m 2s
self_test on iron	3m 58s
self_test on rolling	3m 57s
	51m 56s

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