Add more tests and add back validation for some agents #2634

Job	Run time
CLI End to End tests	11m 13s
End to End tests (Python, python)	23m 6s
Unit tests (Runtime)	9m 21s
End to End tests (Other, other)	21m 53s
Unit tests (Runtime IT)	19m 54s
Unit tests (Deployer)	10m 38s
Unit tests (Api Gateway)	7m 25s
Unit tests (Control plane)	7m 23s
Unit tests (Other)	15m 3s
Unit tests (Style)	5m 38s
	2h 11m 34s

Provide feedback