Description of problem:
Running a validation related to running a podman command will fail because there are no permissions to touch /var/run/libpod/alive.lck

[root@undercloud-0 ~]# ls -l /var/run/libpod/
total 0
-rw-r--r--. 1 root root    0 Jul 15 11:56 alive
-rw-------. 1 root root    0 Jul 15 11:56 alive.lck
drwxr-x---. 2 root root   40 Jul 15 12:14 exits
drwxr-xr-x. 2 root root 2600 Jul 15 12:14 lock
drwxr-x---. 2 root root 1040 Jul 15 12:14 socket

[root@undercloud-0 ~]# getfacl /var/run/libpod/alive.lck
getfacl: Removing leading '/' from absolute path names
# file: var/run/libpod/alive.lck
# owner: root
# group: root
user::rw-
group::---
other::---

Version-Release number of selected component (if applicable):
openstack-tripleo-validations-10.4.1-0.20190701170405.10b4d77.el8ost.noarch

How reproducible:
100%

Steps to Reproduce:
run a podman related validation such as "undercloud-heat-purge-deleted"

Actual results:
[FAILED] - undercloud-heat-purge-deleted
    Task 'undercloud-heat-purge-deleted : Get heat crontab' failed:
    Host: undercloud
    Message: Command `set -o pipefail
    podman exec heat_api_cron crontab -l -u heat |grep -v '^#'
    ` exited with code: 1: non-zero return code
    stderr:
        error creating libpod runtime: error acquiring runtime init lock: error opening "/var/run/libpod/alive.lck": permission denied
    Failure! The validation failed for all hosts:
    * undercloud

Expected results:
Test should be able to run fully.