Changes

hnbgw: skip f_statsd_expect for latest

Fix that 6 tests started failing on ttcn3-hnbgw-test-latest with e.g.:
  Timeout waiting for metrics
        HNBGW_Tests.ttcn:2885 HNBGW_Tests control part
        HNBGW_Tests.ttcn:1536 TC_rab_assign_fail testcase

Fixes: 904b5f1a ("hnbgw: Implement validation of [some] counters")
Change-Id: I0cd47728308757fe6eaaaed1581fbbec03a09cf7