Fix UT.
Fix UT.

Following commit modified installation of vm interface route. It is being
installed when IPAM is present. Test case had a test to check for evpn route and
inet route in absence of Ipam. That fails because of this commit. Fixing the
same.
https://github.com/Juniper/contrail-controller/commit/eda15808d531850f2d5901d643e5d486be9d12aa

Closes-bug: #1595671
Change-Id: Id1936792c0b36e9d1d46520b31330dc590dc7e90

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