The existing AP tests needed to be modified to start IWD from
python since the DHCP test uses a different main.conf.
Also removed some stale hw.conf options that are no longer used.
As with other tests, wait on device state instead of the network
object. The connectivity test was also changed to not check for
group traffic since AP does not negotiate the IGTK at this time.
The tests basically remained the same with a few minor changes.
The wiphy_map and in turn hostapd_map are no longer used. This
was already partially converted a long time ago when the 'config'
parameter was added to HostapdCLI. This patch fully converts all
autotests to use 'config' rather than looking up by interface.
Some test scripts were named 'test.py' which was fine before but
the new rewrite actually loads each python test as a module. The
name 'test' is too ambiguous and causes issues due to a native
python module with the same name. All of these files were
renamed to 'connection_test.py'.
