Add .libs to plugin path for AdaptiveFreqDeciderTest.
Add .libs to plugin path for AdaptiveFreqDeciderTest.

Change-Id: I0220fb6b887b3970ff944fe9fa592c6dc1836085
Signed-off-by: Christopher M. Cantalupo <9cf3ecca60a3dd7112ab0e7250bedb8a752e3958@intel.com>

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