Comment 2 for bug 1649247

Reviewed: https://review.openstack.org/417331
Committed: https://git.openstack.org/cgit/openstack/kolla-ansible/commit/?id=b719782d4424a0537cea1a40364c10d7d9a9fe80
Submitter: Jenkins
Branch: master

commit b719782d4424a0537cea1a40364c10d7d9a9fe80
Author: Chung Chih, Hung <email address hidden>
Date: Fri Jan 6 17:47:52 2017 +0800

    Secret generate fail with hostvars is undefined

    When Kolla-kubernetes try to generate secret, it will found one file
    named ansible/group_vars/all.yml at kolla reporitory. Then try to render
    the file. There is one variable named tunnel_interface_addres which will
    access hostvars variable, but this variable is not exist at kubernetes
    orchestration engine.

    We should add condition statement which will determine whether
    orchestration engine is ansible.

    Co-Authored-By: Duong Ha-Quang <email address hidden>

    Change-Id: I998a7540de3dcae53acb73de79fb8a8e76cc4225
    Closed-Bug: 1649247