selftest/knownfail.d: move samba-4.5-emulation to expectedfail.d

These tests are expected to fail because the handling of GET_ANC has
deliberately been degraded in this environment (in order to test an
upgrade path, long story).

> We now show this is in effect by the fact that tests now fail.

Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

diff --git a/selftest/knownfail.d/samba-4.5-emulation b/selftest/expectedfail.d/samba-4.5-emulation
similarity index 100%
rename from selftest/knownfail.d/samba-4.5-emulation
rename to selftest/expectedfail.d/samba-4.5-emulation