* Removed Force tags "exclude" in 010__vtn_manager_dataflow.robot and 010__vtn_vlanmap.robot(OF10 and OF13) files
* Modify test case to work for RESTCONF feature, earlier test was written for RESTAPI spec.
* Modify VtnMaKeyword.robot file for vlanmap and dataflow functioanlities.
Change-Id: I050e54e95c737783741f0efa755920f74ad172d4
Signed-off-by: Karthik.S <siva-karthik@hcl.com>