Flag to turn off host-key check

[Bob Proulx]

Matt Anderson wrote:
> In my case at least the OS is blown away and reinstalled fairly often. 
> I guess the keys could be saved off on another host and then copied back 
> each time, but those config file changes above would really simplify 
> things for the couple persistent systems that connect in.

The previous solution is probably better but as an alternative you
could teach the client about the new key after it is generated.
Depending upon many things it might be convenient to install random
key and then set the client's known_hosts file with the new key using
ssh-keyscan.  Just a thought...

Bob