Add tests for CLI help and error messages #1446

Job	Run time
Waiting for build / Waiting For Build	5m 37s
Basic SubCA / Test	5m 10s
SubCA with HSM / Test	3m 21s
SubCA clone / Test	4m 31s
SubCA clone with HSM / Test	5m 5s
SubCA with CMC / Test	5m 39s
SubCA with external cert / Test	2m 59s
Lightweight SubCA / Test	4m 10s
Lightweight SubCA with HSM / Test	3m 30s
	40m 2s

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