The value of msapTlsPlcyIgmpSnpgRobustCount specifies
the robustness variable on the MSAP.
This object allows tuning for the expected packet loss on the MSAP.
If a MSAP is expected to be lossy, the Robustness Variable may be
increased. IGMP snooping is robust to (Robustness Variable-1) packet
losses.
The value of this object is only meaningful when the value of
msapTlsPlcyIgmpSnpgSendQueries is 'enabled'.