enable functional test of instance creation with two network interfaces
enable functional test of instance creation with two network interfaces

it was enabled by commit https://github.com/openstack/nova/commit/b06867c5

Change-Id: Ie28c296e39a88553be945ac4e4238ebc2e51d110

openstack/ec2-api,stackforge/ec2-api,hayderimran7/ec2-api,hayderimran7/ec2-api,openstack/ec2-api,stackforge/ec2-api