Comment 5 for bug 1715031

Reviewed: https://review.openstack.org/501120
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=e33d9181e4b75a54968b0821375a2564ff8ceab9
Submitter: Jenkins
Branch: stable/pike

commit e33d9181e4b75a54968b0821375a2564ff8ceab9
Author: Steve Baker <email address hidden>
Date: Tue Sep 5 11:23:22 2017 +1200

    Containerized mongodb, disable by default, fix upgrade

    This change removes the entry to containerise docker by default
    because it should now be disabled since the change
    Id2e6550fb7c319fc52469644ea022cf35757e0ce.

    Removing the entry means the default mapping to mongodb-disabled.yaml
    takes effect.

    This change also modifies the upgrade_tasks so that the mongod service
    is only disabled when the service exists. There appears to be upgrade
    scenarios which fail because mongodb was never installed in the first
    place.

    Change-Id: Ie09ce2a52128eef157e4d768c1c4776fc49f2324
    Closes-Bug: #1715031
    (cherry picked from commit cb81cbe3b5f3887f5d690c590e52b728f74d43c3)