test_hncp_net: Fixed few rare cases where hncp_two testcase converged _too fast_ and resulted in failure, and also disabled pa/multicast in few more tests that expected more consistent TLV behavior.
test_hncp_net: Fixed few rare cases where hncp_two testcase converged _too fast_ and resulted in failure, and also disabled pa/multicast in few more tests that expected more consistent TLV behavior.

sbyx/hnetd,sbyx/hnetd,sbyx/hnetd,sbyx/hnetd,sbyx/hnetd