Report differences on sheath restart test

The sheath restart test is occasionally failing. As detailed in !211 this is probably because the test requires bit reproducibility however it would be good to confirm this. This is tricky as the bug is not reliably reproducible. This MR therefore adds the `-r` flag to the `h5diff` command. This reports the differences which will allow us to have more information about this error the next time it appears.

See merge request gysela-developpers/gyselalibxx!452

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tests/geometryXVx/sheath/test_sheath_restart.sh

@@ -45,21 +45,21 @@ cp "${RSTDIR}/sheath.yaml" sheath_restart.yaml
 sed -i 's/^  nbiter: .*/  nbiter: 2/' sheath_restart.yaml
 sed -i 's/^  time_diag: .*/  time_diag: 0.5/' sheath_restart.yaml
 
-h5ls -d ${PWD}/VOICEXX_00006.h5/time_saved ${RSTDIR}/VOICEXX_00005.h5/time_saved
-command="h5diff ${PWD}/VOICEXX_00005.h5 ${RSTDIR}/VOICEXX_00005.h5 time_saved"
+h5ls -d ${PWD}/VOICEXX_00005.h5/time_saved ${RSTDIR}/VOICEXX_00005.h5/time_saved
+command="h5diff -r ${PWD}/VOICEXX_00005.h5 ${RSTDIR}/VOICEXX_00005.h5 time_saved"
 eval $command
 if [ $? -ne 0 ]; then
     exit 1
 fi
 
-command="h5diff ${PWD}/VOICEXX_00005.h5 ${RSTDIR}/VOICEXX_00005.h5 electrostatic_potential"
+command="h5diff -r ${PWD}/VOICEXX_00005.h5 ${RSTDIR}/VOICEXX_00005.h5 electrostatic_potential"
 eval $command
 if [ $? -ne 0 ]; then
     exit 1
 fi
 
-command="h5diff ${PWD}/VOICEXX_00005.h5 ${RSTDIR}/VOICEXX_00005.h5 fdistribu"
+command="h5diff -r ${PWD}/VOICEXX_00005.h5 ${RSTDIR}/VOICEXX_00005.h5 fdistribu"
 eval $command
 if [ $? -ne 0 ]; then
     exit 1
-fi
+fi