webadmin: It is not possible add non-operational network to vNic of vm.

Removed the if that avoided adding the non-operational networks to the
network list.

Change-Id: I6183a5abcddc343323b82c39111de9f2f1ba5166
Bug-Url: https://bugzilla.redhat.com/948160
Signed-off-by: Alona Kaplan <alkaplan@redhat.com>