Add missing test log4j2.xml files

[madrob]

When running tests in most of the modules, we don't get any log output because there was no logging configuration. I wonder if we could have some kind of gradle rule to validate that we have a log4j2.xml in every test-files folder?

[uschindler]

Why not simply put the logi4j XML file into the Test-Framework.jar file? Log4j can load its config from classpath.
Sorry for late response, came back a minute ago.

[madrob]

@uschindler just tried that and yep, it seems to work just as well. Need to check if how it handles conflicts when we have xml config in test-framework and a specific module, which one wins? If that works as expected I'll revert this and do that instead.

[uschindler]

It depends on order of classpath. Not fully sure how Gradle sets it up, but if test framework comes first in classpath it loads from there.
When we change to java modules like in Lucene, this would be one part to be revisited and correct module opens added.