Add psutil requirement to theta spec file.
Add psutil requirement to theta spec file.

Change-Id: Ib2b6331a99ea16e5f983628bb1683e0c18f7280d
Signed-off-by: Christopher M. Cantalupo <9cf3ecca60a3dd7112ab0e7250bedb8a752e3958@intel.com>

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