Check for Contrail TSN node
Check for Contrail TSN node

Contrail TSN node role could be added without proper configuration in
settings tab. This commit ensure it is enabled before applying node role.

Change-Id: Iac209e0cc1269c1578754982bf30392eb75278d1

stackforge/fuel-plugin-contrail,stackforge/fuel-plugin-contrail,stackforge/fuel-plugin-contrail,stackforge/fuel-plugin-contrail