update descriptions for various endpoints #4724

Job	Run time
build	3m 47s
unit_tests	3m 45s
integration_tests - Solution	4m 46s
integration_tests - Run	4m 18s
integration_tests - Organization	4m 59s
integration_tests - Runner	4m 53s
controller_tests - Workspace	4m 24s
integration_tests - Dataset	4m 52s
controller_tests - Organization	4m 22s
controller_tests - Runner	4m 39s
integration_tests - Workspace	5m 9s
controller_tests - Solution	4m 21s
controller_tests - Meta	4m 24s
controller_tests - Run	4m 26s
controller_tests - Home	3m 57s
controller_tests - Dataset	4m 42s
scan_and_push_container_images_to_registries	3m 42s
	1h 15m 26s

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