This function was moved from VirtualNetworkST class to RoutingInstanceST class. Hence ri object is no longer needed. Use self instead of ri.

Change-Id: I2f4a7bf929ab3af00de095bb0197911b39996774
Closes-Bug: 1372921
Merge "This function was moved from VirtualNetworkST class to RoutingInstanceST class. Hence ri object is no longer needed. Use self instead of ri."