The value of tSapEgressEthernetCtag specifies the tag from which
the dot1p and DE (Drop-Eligible) values will be drawn to be used by all
tSapEgressDot1pEntry objects related to this policy.
The value 'true' specifies that the top customer tag will be
used for egress reclassification based on dot1p criteria.
The value 'false' specifies that a service delimiting tag
will be used for egress reclassification based on dot1p criteria.