Added error checking to report parser.
Added error checking to report parser.

- Parse application totals.
- Got rid of Report.get_region() method.
- Got rid of ZeroRegion.
- Added missing ().

Change-Id: I14b4e6f9f775d9c7ded251b465ccdf61a13ca3ca
Signed-off-by: Christopher M. Cantalupo <9cf3ecca60a3dd7112ab0e7250bedb8a752e3958@intel.com>

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