core: adding vnic_profile_id to vm_interface

This patch adds the vnic_profile_id to different VM interface related
objects, such as the VM Interface entity, DAO, stored procedures and
etc. Testers were fixed accordingly.

Change-Id: I293c66fafdd68671d05a924a90db528e7718e921
Signed-off-by: Oved Ourfali <oourfali@redhat.com>