* Fix bug #5328 apache module loading
Currently, the apache2_module module parses apache configs
for correctness when enabling or disabling apache2 modules.
This behavior introduced a conflict condition when transitioning
between mpm modules, such as mpm_worker and mpm_event.
This change accounts for the specific error condition raised
by ``apachectl -M``:
``AH00534: apache2: Configuration error: No MPM loaded.``
When loading or unloading a module with a name that contains 'mpm_',
apache2_module will ignore the error raised by apachectl if stderr
contains 'AH00534'.
Fixes#5328
* Add AH00534 warning
* Added changes from PR #5629
* Modified ignore_configcheck behavior
250f862573