Description of problem
======================

databases/mysql/configuration_changes prints following messages to stderr:


    INPLACERISK: MEDIUM: /etc/my.cnf: option 'plugin-load=innodb=' is not supported
    INPLACERISK: HIGH: /etc/my.cnf: option 'innodb_file_io_threads' is not supported
    INPLACERISK: HIGH: /etc/my.cnf: option 'language' is deprecated
    /root/preupgrade/RHEL6_7/databases/mysql/configuration_changes/configuration.sh: line 103: : No such file or directory
    INPLACERISK: HIGH: /etc/my.cnf: option 'log-bin-trust-routine-creators' was removed in MariaDB 5.5
    /root/preupgrade/RHEL6_7/databases/mysql/configuration_changes/configuration.sh: line 103: : No such file or directory
    INPLACERISK: HIGH: /etc/my.cnf: option 'table_lock_wait_timeout' was removed in MariaDB 5.5

where 103 refers to 83 in the source:

    echo "obsolete_options_used" >> "$tmp_config"

Indeed, tmp_config has not been defined.


Version-Release number of selected component
============================================

preupgrade-assistant-el6toel7-0.6.46-1.el6


How reproducible
================

Always (with relevant options in my.cnf)


Steps to Reproduce
==================

Schedule /CoreOS/preupgrade-assistant/6to7/contents/mysql-configuration_changes
and pay attention to sub-tests:

    table_lock_wait_timeout
    log_bin_trust_routine_creators
    AllOpts

 -or-

with mysql and mysql-libs installed, add one or both of following lines
to /etc/my.cnf under `[mysqld]` section:

    log-bin-trust-routine-creators=foo
    table_lock_wait_timeout=10

and run preupg.


Actual results
==============

Mentioned errors appear in module's stdout (if BZ#1309491 still applies;
else in stderr).  Module probably does not provide all necessary details.


Expected results
================

No errors; module gives all necessary details.