Description of problem:

Overcloud deployment failed after mysql_bootstrap container failed to start properly.

Deployment failed with below error:-

~~~
This", "ensures that someone cannot guess at the root password from the network.", "", "Disallow root login remotely? [Y/n] n", " ... skipping.", "", "By default, MariaDB comes with a database named 'test' that anyone can", "access.  This is also intended only for testing, and should be removed", "before moving into a production environment.", "", "Remove test database and access to it? [Y/n] y", " - Dropping test database...", " ... Success!", " - Removing privileges on test database...", " ... Success!", "", "Reloading the privilege tables will ensure that all changes made so far", "will take effect immediately.", "", "Reload privilege tables now? [Y/n] y", " ... Success!", "", "Cleaning up...", "", "All done!  If you've completed all of the above steps, your MariaDB", "installation should now be secure.", "", "Thanks for using MariaDB!", "200917 07:24:13 mysqld_safe Logging to '/var/log/mariadb/mariadb.log'.", "200917 07:24:13 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql"]}
2020-09-17 03:25:14 | 
2020-09-17 03:25:14 | NO MORE HOSTS LEFT *************************************************************
2020-09-17 03:25:14 | 
2020-09-17 03:25:14 | PLAY RECAP *********************************************************************
2020-09-17 03:25:14 | overcloud-controller-0     : ok=216  changed=137  unreachable=0    failed=1    skipped=227  rescued=0    ignored=0   
2020-09-17 03:25:14 | overcloud-controller-1     : ok=210  changed=137  unreachable=0    failed=1    skipped=223  rescued=0    ignored=0   
2020-09-17 03:25:14 | overcloud-controller-2     : ok=211  changed=137  unreachable=0    failed=0    skipped=223  rescued=0    ignored=0   
2020-09-17 03:25:14 | overcloud-novacompute-0    : ok=174  changed=103  unreachable=0    failed=0    skipped=240  rescued=0    ignored=0   
2020-09-17 03:25:14 | undercloud                 : ok=22   changed=13   unreachable=0    failed=0    skipped=2    rescued=0    ignored=0   
2020-09-17 03:25:14 | 
2020-09-17 03:25:14 | Thursday 17 September 2020  03:25:14 -0400 (0:01:19.765)       0:24:43.415 **** 
2020-09-17 03:25:14 | =============================================================================== 
2020-09-17 03:25:17 | Overcloud configuration failed.
2020-09-17 03:25:17 | 
~~~

Looking at /var/log/extra/podman/containers/mysql_bootstrap/stdout.log on controller, We noticed "mysqld is alive" line is missing in logs:-

~~~
2020-09-17T07:24:12.174748349+00:00 stdout F Thanks for using MariaDB!
2020-09-17T07:24:13.448180470+00:00 stdout F 200917 07:24:13 mysqld_safe Logging to '/var/log/mariadb/mariadb.log'.
2020-09-17T07:24:13.509833466+00:00 stdout F 200917 07:24:13 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
~~~

Expected:-

Normally we see below logs(/var/log/extra/podman/containers/mysql_bootstrap/stdout.log) in good environment 

~~~
Thanks for using MariaDB!
200917 09:02:24 mysqld_safe Logging to '/var/log/mariadb/mariadb.log'.
200917 09:02:25 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
mysqld is alive
~~~


Version-Release number of selected component (if applicable):

16.2


How reproducible:
Very frequent in ci 

Steps to Reproduce:
1. Deploy tripleio featureset001 on real baremetal environment


Additional info: