Description of problem:

When installing logging via ansible playbook PUBLIC_MASTER_URL and OAP_LOGOUT_REDIRECT in kibana dc are set do first master which 
causes issues with kibana (e.g. logout leads to error) if the first master is not available for whatever reason.
 

Version-Release number of selected component (if applicable):

ansible-2.4.1.0-1.el7.noarch

openshift v3.7.23
kubernetes v1.7.6+a08f5eeb62

kibana:
        image: registry.access.redhat.com/openshift3/logging-kibana:v3.7.23
        image: registry.access.redhat.com/openshift3/logging-auth-proxy:v3.7.23


How reproducible:


Steps to Reproduce:
1. install OCP 3.7 w/o logging
2. Add the following options to /etc/ansible/hosts
[...]
#logging
openshift_hosted_logging_deploy=true
openshift_logging_install_logging=true
openshift_logging_storage_kind=nfs
openshift_logging_storage_access_modes=['ReadWriteOnce']
openshift_logging_storage_nfs_directory=/exports
openshift_logging_storage_nfs_options='*(rw,root_squash)'
openshift_logging_storage_volume_name=logging
openshift_logging_storage_volume_size=40Gi
openshift_logging_image_version=v3.7.23
openshift_logging_image_prefix=registry.access.redhat.com/openshift3/
openshift_logging_master_url=https://kubernetes.default.svc.{{openshift.common.dns_domain}}
openshift_logging_kibana_hostname=kibana.ocp.example.com
[...]

3. Install logging
   # ansible-playbook -i /etc/ansible/hosts /usr/share/ansible/openshift-ansible/playbooks/byo/openshift-cluster/openshift-logging.yml

4. Check dc for kibana:

# oc describe dc/logging-kibana
[...]
      OAP_PUBLIC_MASTER_URL:		https://master1.example.com:8443
      OAP_LOGOUT_REDIRECT:		https://master1.example.com:8443/console/logout
[...]


Actual results:
OAP_PUBLIC_MASTER_URL and OAP_LOGOUT_REDIRECT are always set to first master, which should not be the case

Expected results:
OAP_PUBLIC_MASTER_URL and OAP_LOGOUT_REDIRECT should point at the public cluster hostname


Additional info:


Description of problem:

Version-Release number of the following components:
rpm -q openshift-ansible
rpm -q ansible
ansible --version

How reproducible:

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