New netvirt classifier expects but not set tunnel IP destination on egress pipeline

Genius, on its egress handling of flow based tunnel interfaces, sets the remote IP address as the very last action before output. The original design of the new netvirt classifier egress pipeline expected this IP address to be set beforehand so that it could move it to NSH C1 and replace it with the SFF IP.

As a result, C1 is empty and on chain egress the original packet cannot be handled properly.