Comment 9 for bug 1778195

Reviewed: https://review.openstack.org/580376
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible/commit/?id=472bb4d2f91f4660fef16f7d75be5e58bbab4017
Submitter: Zuul
Branch: stable/queens

commit 472bb4d2f91f4660fef16f7d75be5e58bbab4017
Author: Kourosh Vivan <email address hidden>
Date: Fri Jun 22 11:26:54 2018 +0200

    Install gnocchi before ceilometer

    When ceilometer use gnocchi as backend, gnocchi playbook need to be
    run before ceilometer's

    Partial-Bug: 1778195
    Change-Id: Ib1f4ee5e260a042d7f2bdf1750828461e3710730
    (cherry picked from commit 9a767909197fcc37db123774874a80de851b5927)