* Set tunnel for vlan route to mpls only, if vxlan was enabled
  then agent was publishing the route with mpls label 0.

Change-Id: Iafbbe40c3d2f8ec25204e6ce48d40401bac6c367
Merge "* Set tunnel for vlan route to mpls only, if vxlan was enabled   then agent was publishing the route with mpls label 0."