adding multiarch support #57

Job	Run time
check-formating	1m 9s
build-graviton-operator-image	8m 55s
smoke-tests (basic)	1h 6m 5s
smoke-tests (appframeworks1)	1h 53m 15s
smoke-tests (managerappframeworkc3)	2h 20m 22s
smoke-tests (managerappframeworkm4)	2h 20m 21s
smoke-tests (managersecret)	2h 20m 21s
smoke-tests (managermc)	1h 31m 3s
push-latest	1s
	11h 41m 32s

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