Use this fix in our tests:
17a894fc66
This allows osmo-hnbgw to start out with SCCP local reference == 0
without that causing test failure.
'Related' patch below happens to have that effect, and it was *really*
hard to find out why th the tests failed. It seemed like I had messed up
osmo-hnbgw, but then I found out it wasn't my fault at all.
Related: Iea1824f1c586723d989c80a909bae16bd2866e08 osmo-hnbgw
Change-Id: Idb3f2398c934a1d785e8ee7913c12c0f289c1f18