Use temporary directory in tests with same output file

DaVinciExamples/tests/qmtest/tupling.qms/test_davinci_tupling_from_hlt2_with_matching.qmt

@@ -21,6 +21,7 @@
   <argument name="options_yaml_fn"><text>$DAVINCIEXAMPLESROOT/example_data/Run255620.yaml</text></argument>
   <argument name="reference"><text>../refs/test_davinci_tupling_from_hlt2_with_matching.ref</text></argument>
   <argument name="error_reference"><text>../refs/empty.ref</text></argument>
+  <argument name="use_temp_dir"><enumeral>true</enumeral></argument>
   <argument name="validator"><text>
 # Check there are no NaN values in the ntuple except where expected.
 from DaVinciTests.QMTest.check_helpers import has_nan

DaVinciExamples/tests/qmtest/tupling.qms/test_davinci_tupling_from_raw_data.qmt

@@ -20,6 +20,7 @@
   <argument name="options_yaml_fn"><text>$DAVINCIEXAMPLESROOT/example_data/Run255620.yaml</text></argument>
   <argument name="reference"><text>../refs/test_davinci_tupling_from_raw_data.ref</text></argument>
   <argument name="error_reference"><text>../refs/empty.ref</text></argument>
+  <argument name="use_temp_dir"><enumeral>true</enumeral></argument>
   <argument name="validator"><text>
 from DaVinciTests.QMTest.DaVinciExclusions import preprocessor, counter_preprocessor
 validateWithReference(preproc = preprocessor, counter_preproc = counter_preprocessor)