The value of tAdvCfgOMGranPirPrcnt specifies the granularity
percentage of the child's administrative PIR that should be used as the
threshold sensitivity to offered rate.
When the value of tAdvCfgOMGranPirPrcnt is set to '0', it restores
the default offered rate sensitivity behavior to all child policers and
queues associated with the policy specified by tAdvCfgPolicyName.