Fix CI UT failures
Fix CI UT failures

Issue:
------
CI UT internaly triggers controller/src/vnsw/agent/pkt:test
which was removed earlier, not sure how did it pass CI job

Fix:
----
restoring alias controller/src/vnsw/agent/pkt:test

Closes-Bug: 1571400
Change-Id: Ic2c94361964b7933b34d3be7395242235574b6ad

tcpcloud/contrail-controller,tcpcloud/contrail-controller,tcpcloud/contrail-controller,tcpcloud/contrail-controller,tcpcloud/contrail-controller,tcpcloud/contrail-controller