Bug 1507787

Description of problem:
According to BZ#1506138, default __ansible_service_broker_etcd_image_prefix in roles/ansible_service_broker/vars/openshift-enterprise.yml should be set to:
registry.access.redhat.com/rhel7/;

In openshift-ansible-3.7.0-0.185.0.git.0.eb61aff.el7.noarch code, it is:
__ansible_service_broker_etcd_image_prefix: rhel7/

Which will lead to the following error:
# oc get po
NAME           READY     STATUS             RESTARTS   AGE
asb-7-deploy   0/1       Error              0          39m
asb-8-deploy   1/1       Running            0          4m
asb-8-nspbk    0/2       CrashLoopBackOff   5          4m

# oc describe po asb-8-nspbk
<--snip-->
  4m		4m		2	kubelet, qe-chezhang-1node-registry-router-1	spec.containers{asb}	Normal		Created			Created container
  4m		4m		2	kubelet, qe-chezhang-1node-registry-router-1	spec.containers{asb}	Normal		Started			Started container
  4m		4m		3	kubelet, qe-chezhang-1node-registry-router-1	spec.containers{etcd}	Normal		BackOff			Back-off pulling image "rhel7/etcd:latest"
  4m		4m		3	kubelet, qe-chezhang-1node-registry-router-1	spec.containers{etcd}	Warning		Failed			Error: ImagePullBackOff
  4m		4m		2	kubelet, qe-chezhang-1node-registry-router-1	spec.containers{etcd}	Normal		Pulling			pulling image "rhel7/etcd:latest"
  4m		4m		3	kubelet, qe-chezhang-1node-registry-router-1	spec.containers{asb}	Warning		BackOff			Back-off restarting failed container
  4m		4m		2	kubelet, qe-chezhang-1node-registry-router-1	spec.containers{etcd}	Warning		Failed			Failed to pull image "rhel7/etcd:latest": rpc error: code = 2 desc = errors:
denied: requested access to the resource is denied
unauthorized: authentication required

  4m	4m	2	kubelet, qe-chezhang-1node-registry-router-1	spec.containers{etcd}	Warning	Failed	Error: ErrImagePull

In this case, we set "registry.reg-aws.openshift.com" to openshift_docker_additional_registries for openshift-ansible inventory host file.


Version-Release number of the following components:
openshift-ansible-3.7.0-0.185.0.git.0.eb61aff.el7.noarch

How reproducible:
Always

Steps to Reproduce:
1.
2.
3.

Actual results:
Please include the entire output from the last TASK line through the end of output if an error is generated

Expected results:

Additional info:
Please attach logs from ansible-playbook with the -vvv flag