Each entry of the tmnxSLAEgrPolicerOverrideTable describes policer
parameters which override the corresponding template policer
parameters from the specified egress QoS policy. Rows can be created
and deleted by the operator (tmnxSLAEgrPolicerOvrRowStatus). Rows can
only be created for policers that exist in table
TIMETRA-QOS-MIB::tSapEgrPolicerTable.