test days live image creation guide

[Kamil Paral]

----- "Adam Williamson" <awilliam at redhat.com> wrote: 
> Yeah, exactly - I don't see the need for a permanent
> institutionalized
> 'test day repo', that just runs the risk of us putting things there
> that
> we should really put in the main distro.
> 

I have thus taken the liberty to remove the old repositories
from the script and also replaced references to #fedora-qa IRC
channel with #fedora-test-day channel.

Thanks for your comments!
Kamil