Doesn't really do anything that wasn't done already, but will provide a
good entry point for better and more flexible targeting use, e.g. by
breaking down the OS name with Recog when needed.
During module instantiation auto_target process is expected to account
for existing hosts if `rhost` is set, however just testing if the module
responds to `rhost` is not sufficent to guard the query, a value must also
have been set.
the fallback to the original default was failing because
it was assuming rhost was already set, so it would always
go back to the first default target. now the auto_target? method
only returns true if can pull an auto_target_host
if the module authour added an automatic target
we skip our routine, to let the module's own automatic targeting
take over as it likely be better
MS-2325
targets now filtered by OS name, but a little
more processing may be needed on this part because
it looks like what you'd expect in os_flavor gets jammed
into name instead
MS-2325
agalway-r7