Use vgopath setup consistently (#910) #1615

Job	Run time
buildAndPush (onmetal-api-controller-manager, manager)	2m 18s
buildAndPush (onmetal-api-apiserver, apiserver)	3m 8s
buildAndPush (onmetal-api-machinepoollet, machinepoollet)	3m 1s
buildAndPush (onmetal-api-machinebroker, machinebroker)	3m 47s
buildAndPush (onmetal-api-orictl-machine, orictl-machine)	2m 17s
buildAndPush (onmetal-api-volumepoollet, volumepoollet)	2m 13s
buildAndPush (onmetal-api-volumebroker, volumebroker)	5m 45s
buildAndPush (onmetal-api-orictl-volume, orictl-volume)	3m 30s
buildAndPush (onmetal-api-bucketpoollet, bucketpoollet)	4m 17s
buildAndPush (onmetal-api-bucketbroker, bucketbroker)	5m 38s
buildAndPush (onmetal-api-orictl-bucket, orictl-bucket)	3m 31s
	39m 25s

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