kuttl helm test change parallel to 1 #4187

Job	Run time
check-formating	1m 53s
unit-tests	6m 30s
build-operator-image	8m 55s
vulnerability-scan	1m 19s
smoke-tests (basic)	1h 14m 25s
smoke-tests (appframeworks1)	1h 35m 11s
smoke-tests (managerappframeworkc3)	2h 10m 31s
smoke-tests (managerappframeworkm4)	1h 32m 5s
smoke-tests (managersecret)	1h 20m 19s
smoke-tests (managermc)	1h 9m 2s
push-latest	0s
	9h 20m 10s

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