unit_tests: fix hard fork tests
unit_tests: fix hard fork tests

A couple stopped passing when the hard fork code was made
to reject incoming hard fork versions it did not know about.

ranok/bitmonero,eiabea/bitmonero,ranok/bitmonero,ranok/bitmonero,eiabea/bitmonero,eiabea/bitmonero,ranok/bitmonero,eiabea/bitmonero,ranok/bitmonero,ranok/bitmonero,eiabea/bitmonero,eiabea/bitmonero