feat: global registry support #149

Job	Run time
k8s-e2e-tests-extended / K8s e2e tests dynamic	10m 18s
k8s-e2e-tests-extended / K8s e2e tests proxy	11m 19s
k8s-e2e-tests-extended / K8s e2e tests fleet-control	11m 30s
k8s-e2e-tests-extended / K8s e2e tests apm	14m 0s
k8s-e2e-tests-extended / K8s e2e tests custom-repo	11m 33s
k8s-e2e-tests-extended / K8s e2e tests collector	11m 16s
k8s-e2e-tests-extended / K8s e2e tests	3s
	1h 9m 59s

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