[BUGFIX] Follow-Up to #41828 - Move test files

Test files for #41828 should be in Tests/ instead of tests/

Change-Id: I26188b0addae691a2d5c4c8289885303db556d82
Related: #41828
Releases: 6.0
Reviewed-on: http://review.typo3.org/15810
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn