Is it save to replace the pause container in pod-infra-container-image? (Kubelet 1.5 in C7 Extras)

[KollegaDe]

We are setting up a kubernetes 1.5 test environment on Centos 7 (c7 vms with stock extras kube rpms installed, atomic maybe later) and ran into acessibility issues with container registry.access.redhat.com/rhel7/pod-infrastructure:latest. This container seems to require a rhel subscribers client cert which we dont have.

Is it save to substitute this pause image in the kubelet config with pod-infra-container-image=gcr.io/google_containers/pause-amd64:3.0 ?

Pods work with this pause container now, but we would like to know if we miss something by substituting rhel7/pod-infrastructure with google_containers/pause-amd64.

This gave us the idea for the substitution:
https://trello.com/c/CA5zb4WE/169-default-kubernetes-to-use-rh-provided-pause-container-kube-containers