Add barriers to test_ee_short_region_slop test
Add barriers to test_ee_short_region_slop test

Change-Id: Ib5b60bf495db98af99023bc28710cd57045440b8
Signed-off-by: Christopher M. Cantalupo <9cf3ecca60a3dd7112ab0e7250bedb8a752e3958@intel.com>

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