The value of sdpBindForceVlanVcForwarding specifies whether or not
vc-vlan-type forwarding is forced in the data-path for the sdp which
have sdpBindVcType set to 'ether'. When set to 'true'
vc-vlan-type forwarding is forced.
An 'inconsistentValue' error is returned when an attempt is made to set
the value of sdpBindForceVlanVcForwarding to 'true' and sdpBindVcType is
not set to 'ether'.