make filename shorter less than 144chars
Rename test_PivotByQueryParamTest_test_PivotBySubtableDimension_CreatesCorrectPivotTable_WhenEntireHirearchyIsNotLoaded__Referrers.getKeywords_week.xml to test_PivotByQueryParamTest_test_PivotBySubtableDimension_WhenEntireHirearchyIsNotLoaded__Referrers.getKeywords_week.xml
Merge pull request #6338 from piwik/fix_filename

Fix  git fatal failed to stat File name too long