improve debug output of [validate-services : Fails if we find failed systemd units]

[wes hayutin]

2019-04-03 00:21:08.559301 | primary | TASK [validate-services : Get failed services from Systemd] ********************
2019-04-03 00:21:08.621823 | primary | Wednesday 03 April 2019 00:21:08 +0000 (0:00:00.225) 0:41:21.249 *******
2019-04-03 00:21:09.392219 | primary | changed: [undercloud]
2019-04-03 00:21:09.439628 | primary |
2019-04-03 00:21:09.439939 | primary | TASK [validate-services : Fails if we find failed systemd units] ***************
2019-04-03 00:21:09.470655 | primary | Wednesday 03 April 2019 00:21:09 +0000 (0:00:00.849) 0:41:22.098 *******
2019-04-03 00:21:09.761364 | primary | fatal: [undercloud]: FAILED! => {
2019-04-03 00:21:09.761529 | primary | "assertion": "systemd_state.stdout_lines|length == 0",
2019-04-03 00:21:09.761619 | primary | "changed": false,
2019-04-03 00:21:09.761689 | primary | "evaluated_to": false
2019-04-03 00:21:09.761721 | primary | }
2019-04-03 00:21:09.805860 | primary |
2019-04-03 00:21:09.806098 | primary | PLAY RECAP *

http://logs.openstack.org/76/649476/2/check/tripleo-ci-centos-7-standalone-upgrade/12d980a/job-output.txt.gz#_2019-04-03_00_21_08_559301

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/649705

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/649705
Committed: https://git.openstack.org/cgit/openstack/tripleo-quickstart-extras/commit/?id=d5476b1f56d3cbe761c4f49dcbba849a14b2c2c9
Submitter: Zuul
Branch: master

commit d5476b1f56d3cbe761c4f49dcbba849a14b2c2c9
Author: Wes Hayutin <email address hidden>
Date: Wed Apr 3 13:17:44 2019 -0600

    add error message for failed container services

    When checking to see if any of the containers
    have failed via systemd we don't provide
    any human readable output. Include
    an error message

    Closes-Bug: #1823030
    Change-Id: I575aa98d07d2c43d0e57689df3f3030dffe906a4

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tripleo-quickstart-extras 2.1.1 release.