Restriction on sequence of allowed address pairs

Since the order in which we receive the allowed address pair doesn't
matter, we should remove the order/sequence dependency in
_update_port_with_address method. The proposed solution is to assert
on the items in the allowed address pairs.

Closes-Bug: 1594633
Change-Id: Ibada9d24c0d018163cad575067def1c2ed20333f
1 file changed