Filed from caserun https://tcms.engineering.redhat.com/run/354598/#caserun_20426809

Version-Release number of selected component (if applicable):
rhel-7

Steps to Reproduce: 
(run the test)

Actual results: 
main.plugin_auth 'innodb'                [ fail ]
        Test ended at 2019-03-01 21:37:24

CURRENT_TEST: main.plugin_auth
mysqltest: At line 437: query 'connect cleartext_fail_con,localhost,uplain,cleartext_test2' failed with wrong errno 2059: 'Plugin mysql_clear_password could not be loaded: /opt/rh/rh-mariadb103/root/usr/lib64/mariadb/plugin//mysql_clear_password.so: cannot open shared object file: No such file or directory', instead of 1045...

The result from queries just before the failure was:
< snip >
With_grant	1
FLUSH PRIVILEGES;
#
# Bug#58139 : default-auth option not recognized in MySQL standard
#             command line clients
#
# Executing 'mysql'
1
1
# Executing 'mysqladmin'
mysqld is alive
# Executing 'mysqldump'
# Executing 'mysql_upgrade'
#
# Bug #59657: Move the client authentication_pam plugin into the 
#  server repository
#
CREATE USER uplain@localhost IDENTIFIED WITH 'cleartext_plugin_server'
  AS 'cleartext_test';
## test plugin auth

More results from queries before failure can be found in /var/opt/rh/rh-mariadb103/lib/mysql/testlg3/log/plugin_auth.log

 - saving '/var/opt/rh/rh-mariadb103/lib/mysql/testlg3/log/main.plugin_auth-innodb/' to '/var/opt/rh/rh-mariadb103/lib/mysql/testlg3/log/main.plugin_auth-innodb/'
***Warnings generated in error logs during shutdown after running tests: main.plugin_auth

2019-03-01 21:37:20 0 [Warning] Plugin 'test_plugin_server' is of maturity level unknown while the server is stable
2019-03-01 21:37:20 0 [Warning] Plugin 'cleartext_plugin_server' is of maturity level unknown while the server is stable
2019-03-01 21:37:23 0 [Warning] Plugin 'test_plugin_server' is of maturity level unknown while the server is stable
2019-03-01 21:37:23 0 [Warning] Plugin 'cleartext_plugin_server' is of maturity level unknown while the server is stable
2019-03-01 21:37:23 0 [ERROR] Missing system table mysql.proxies_priv; please run mysql_upgrade to create it
2019-03-01 21:37:23 8 [ERROR] Missing system table mysql.proxies_priv; please run mysql_upgrade to create it