The value of tmnxSLAProfEgrQosMarkingFromSap specifies which
egress QoS marking rules are applied.
If set to 'false', the egress Qos marking is defined in the
sap-egress policy defined at SLA-profile level.
If set to 'true', QoS marking rules defined in the sap-egress
policy associated with the given SAP are applied.