Override Build Host string

[Michael Cronenworth]

Mike McLean wrote:
> So it's/trying/  to get the fqdn. Are you seeing "Could not canonicalize
> hostname" warnings?

Yes, I see the warning occur twice in my build.log. Once at the start, 
and once at the end.

hostname -f does not return the fqdn. I am running bind locally on the 
koji build server and it has the fqdn for the server in it. a "host 
shortname" returns "shortname.fqdn.com" as a result. Do you have a 
suggestion on how to correct hostname -f? (assuming that will correct 
mock/koji)