The value of tmnxSubInfoEgrSecShaper indicates the interpretation
of the tmnxSubInfoIntermediateDestId object. A value 'unused',
indicates that this subscriber is on a non-HSMDA MDA and the value
of tmnxSubInfoIntermediateDestId is unused. A value of 'default'
indicates that the default secondary shaper will be used for the
subscriber. A value of 'intDestId' indicates that the value of
tmnxSubInfoIntermediateDestId indicates the secondary shaper that
will be used for this subscriber.