overcloud ARA is the same as undercloud ARA

[Quique Llorente]

[ After merging https://review.openstack.org/#/c/602025/ (note: wrong link waiting for update from bug author) ]

 we have now ARA for overcloud, but looks like it's ARA_DATABASE is not working right, and it gather the undercloud ARA:

You can see that both are identical:
http://logs.openstack.org/38/580238/8/check/tripleo-ci-centos-7-scenario001-multinode-oooq-container/b0bd8e6/logs/ara.oooq.root.json
http://logs.openstack.org/38/580238/8/check/tripleo-ci-centos-7-scenario001-multinode-oooq-container/b0bd8e6/logs/ara.oooq.oc.json

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/605678

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/605678
Committed: https://git.openstack.org/cgit/openstack/tripleo-quickstart-extras/commit/?id=22126f701075c6dacce646c663b8e23551e0c8d8
Submitter: Zuul
Branch: master

commit 22126f701075c6dacce646c663b8e23551e0c8d8
Author: Sagi Shnaidman <email address hidden>
Date: Thu Sep 27 15:45:13 2018 +0300

    Fix overcloud ARA data collection

    ara_overcloud_db_path was undefined in collect-logs role and
    undercloud data was collected twice, ansible didn't alert
    about undefined variable if it's in "environment"

    Close-Bug: #1794238
    Change-Id: I1d982a129337188a884e366cdc56a07637107e4b