TESTS: create a submodule for holding test classes for the b3.extplugins module
TESTS: add test file for plugin XLRstats and a test case for validating the behavior of the plugin when loaded with en empty config file
TESTS: add a test case for validating the behavior of the XLRstats plugin when loaded with the default config file
TESTS:Xlrstats: refactoring and add lower the logging level down to DEBUG while running tests
Merge remote-tracking branch 'thomasleveil/xlrstats_testing' into xlrstats-testing