Enable mpi testing in travis.
Enable mpi testing in travis.

Change-Id: If6f111e856e6943799b49c7c86ac846f0f2267ed
Signed-off-by: Christopher M. Cantalupo <9cf3ecca60a3dd7112ab0e7250bedb8a752e3958@intel.com>

sssylvester/geopm,geopm/geopm,cmcantalupo/geopm,cmcantalupo/geopm,cmcantalupo/geopm,geopm/geopm,geopm/geopm,sssylvester/geopm,sssylvester/geopm,geopm/geopm,cmcantalupo/geopm,geopm/geopm,cmcantalupo/geopm,sssylvester/geopm