Merge pull request #286 from RiteshMaheshwari/master

Fix unit tests since anomaly_detection_metrics is a new parameter
Fixing initialize_metric call that was missing intialization of the anomaly_detection_metric
Fix issue of graphing_library variable being used before set. Set to None.
Updating naarad metric collector (sar.sh) to have some new collections.
Adding sar network, switching, queue to the metric list for SAR.
Merge remote-tracking branch 'upstream/master'
Updating constants to deal with TOP and have SAR-network parsed.
Merge pull request #287 from richardhsu/master

Bug Fixes and SAR-network
Merge pull request #288 from RiteshMaheshwari/master

[Luminol] New "absolute threshold" and "diff percent" algorithms for anomaly detection
Adding custom algorithm support in Luminol anomaly detection