Description of problem:

from http://post-office.corp.redhat.com/archives/beaker-user-list/2012-June/msg00031.html

==
I think it would be a useful feature to be able to supply your own 
Anaconda part commands in the job. As plain text, not XML. (It's been 
discussed on this list before, I think...)

Maybe we could add an attribute raw="True" meaning you want to pass the 
Anaconda commands directly instead of XML, and another attribute 
suppress_defaults="True" meaning you don't want the default root, boot, 
and swap. Then you could have:

    <partitions raw="True" suppress_defaults="True">
        part / --fstype ext4 --size=100 --grow
        ...
    </partitions>

with whatever crazy part commands you want. Then it would be up to you 
to make sure they are valid and installable
==