pscheduler-tool-twping: check protocol only for rtt tests
pscheduler-tool-twping: check protocol only for rtt tests

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