add unified diff output if test fails
add unified diff output if test fails

kalxas/pycsw,ingenieroariel/pycsw,kalxas/pycsw,kevinpdavies/pycsw,geopython/pycsw,kevinpdavies/pycsw,ricardogsilva/pycsw,ckan-fcd/pycsw-fcd,mwengren/pycsw,bukun/pycsw,benhowell/pycsw,rouault/pycsw,ocefpaf/pycsw,ckan-fcd/pycsw-fcd,rouault/pycsw,PublicaMundi/pycsw,PublicaMundi/pycsw,ricardogsilva/pycsw,kalxas/pycsw,tomkralidis/pycsw,ocefpaf/pycsw,ricardogsilva/pycsw,bukun/pycsw,mwengren/pycsw,bukun/pycsw,geopython/pycsw,ingenieroariel/pycsw,geopython/pycsw,benhowell/pycsw,tomkralidis/pycsw,tomkralidis/pycsw