The value of tmnxOamSaaCtlTestMode indicates the type of Service
Assurance Agent (SAA) test to be performed.
When the value of this object is 'notConfigured(0)', no associated row
exists in either the tmnxOamPingCtlTable or tmnxOamTrCtlTable.
When the value of this object is 'ping(1)', an associated row exists in
the tmnxOamPingCtlTable.
When the value of this object is 'traceroute(2)', an associated row
exists in the tmnxOamTrCtlTable.