* Handled rttMonLatestJitterOperPacketOutOfSequence and rttMonLatestJitterOperPacketMIA not being present on Cisco Nexus9000 routers by defaulting to null value when not found.
Non-existance of OIDs confirmed here: https://cisco.github.io/cisco-mibs/supportlists/nexus9000/Nexus9000MIBSupportList.html
* Added snmp test data
* Removed superfluous comments
* Fixed sla number in test data
* Removed spacing
* Removed ?
