Comment 4 for bug 1570935

Reviewed: https://review.openstack.org/351588
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=9c69d4b2e0a8a22c3b56697b7252f17e8be84614
Submitter: Jenkins
Branch: master

commit 9c69d4b2e0a8a22c3b56697b7252f17e8be84614
Author: Hiroki Ito <email address hidden>
Date: Fri Aug 5 17:27:03 2016 +0900

    Fix prechecks of a vip address

    In the case of a single node environment without haproxy, the var
    "kolla_internal_vip_adress" in global.yml should be the ip address
    of the host. However, the prechecks will fail, because this ip
    address is used by the host node and is pingable.

    This commit fixes the prechecks of a vip address properly.
    When the var "enable_haproxy" is "no", this fix will skip prechecks
    for a vip address.

    Change-Id: I0b752f179d20f82e3d6331047ee0bd802ab99a4b
    Closes-Bug: #1570935