The sapEgrSchedPlcyPortStatsTable contains
egress QoS scheduler statistics for the SAP's, organized per
scheduler policy and per port. This table is used when the SAP
is a CCAG or LAG in 'link' mode, or an APS.
Entries are created when a scheduler policy of a SAP
is replaced with another one due to Time-Of-Day policies.
Conceptual rows in this table are automatically created by
the system.
No row will be created for a SAP if the value of the object
sapTodSuite is equal to the empty string.