changed travis recipe for running unit tests first
changed travis recipe for running unit tests first

This will make it faster to detect failures, as unit tests run faster than the others

kalxas/pycsw,geopython/pycsw,ricardogsilva/pycsw,bukun/pycsw,tomkralidis/pycsw,geopython/pycsw,tomkralidis/pycsw,ricardogsilva/pycsw,tomkralidis/pycsw,ricardogsilva/pycsw,bukun/pycsw,bukun/pycsw,geopython/pycsw,kalxas/pycsw,kalxas/pycsw