Addresses perfsonar/graphs#102. Adds a histogram-rtt statistics summary with summary of 0.
Addresses perfsonar/graphs#102. Adds a histogram-rtt statistics summary with summary of 0.

perfsonar/pscheduler,mfeit-internet2/pscheduler-dev,perfsonar/pscheduler,perfsonar/pscheduler,mfeit-internet2/pscheduler-dev,perfsonar/pscheduler