Description of problem:
When creating heat stack which selects IP failover mode for OpenShift router, ansible-playbook would failed at task "Deploy Openshift IP failover for router". This looks like to be caused by a existing bug in OCP 3.3: https://bugzilla.redhat.com/show_bug.cgi?id=1332432

Version-Release number of selected component (if applicable):
openshift-on-openstack v0.9.1

# oc version
oc v3.3.0.34
kubernetes v1.3.0+52492b4

openshift v3.3.0.34
kubernetes v1.3.0+52492b4


How reproducible:
100%

Steps to Reproduce:
1.Create a heat stack which is OCP3.3 + IP failover mode for router
2.
3.

Actual results:

Heat stack was failed.

Check the ansible log on bastion host:
TASK [Deploy Openshift IP failover for router] *********************************
task path: /var/lib/ansible/playbooks/ipfailover.yml:13
Using module file /usr/lib/python2.7/site-packages/ansible/modules/core/commands/command.py
<ghuang6-neutron-lb-openshift-master-0.example.com> ESTABLISH SSH CONNECTION FOR USER: cloud-user
<ghuang6-neutron-lb-openshift-master-0.example.com> SSH: EXEC ssh -vvv -o ControlMaster=auto -o ControlPersist=600s -o StrictHostKeyChecking=no -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=cloud-user -o ConnectTimeout=10 -o ControlPath=/root/.ansible/cp/%h-%r ghuang6-neutron-lb-openshift-master-0.example.com '/bin/sh -c '"'"'sudo -H -S -n -u root /bin/sh -c '"'"'"'"'"'"'"'"'echo BECOME-SUCCESS-cbaufsurovkgobuxxsndnuxwaydehrez; /usr/bin/python'"'"'"'"'"'"'"'"' && sleep 0'"'"''
fatal: [ghuang6-neutron-lb-openshift-master-0.example.com]: FAILED! => {
    "changed": true, 
    "cmd": [
        "oadm", 
        "ipfailover", 
        "--create", 
        "--service-account=ipfailover", 
        "--interface=eth0", 
        "--selector=region=infra", 
        "--replicas=2", 
        "--virtual-ips=192.168.0.4", 
        "--credentials=/etc/origin/master/openshift-router.kubeconfig"
    ], 
    "delta": "0:00:00.237775", 
    "end": "2016-10-10 02:20:02.918713", 
    "failed": true, 
    "invocation": {
        "module_args": {
            "_raw_params": "oadm ipfailover --create --service-account=ipfailover --interface=eth0 --selector='region=infra' --replicas=2 --virtual-ips=\"192.168.0.4\" --credentials=/etc/origin/master/openshift-router.kubeconfig", 
            "_uses_shell": false, 
            "chdir": null, 
            "creates": null, 
            "executable": null, 
            "removes": null, 
            "warn": true
        }, 
        "module_name": "command"
    }, 
    "rc": 1, 
    "start": "2016-10-10 02:20:02.680938", 
    "stderr": "Flag --credentials has been deprecated, use --service-account to specify the service account the ipfailover pod will use to make API calls\n    error: serviceaccounts \"ipfailover\" already exists", 
    "stdout": "--> Creating IP failover ipfailover ...\n    deploymentconfig \"ipfailover\" created\n--> Failed", 
    "stdout_lines": [
        "--> Creating IP failover ipfailover ...", 
        "    deploymentconfig \"ipfailover\" created", 
        "--> Failed"
    ], 
    "warnings": []
}
	to retry, use: --limit @/var/lib/ansible/playbooks/main.retry



Expected results:
Stack created successfully.

Additional info: