Add feature for KPET to accept a beaker snippet for hostRequires.xml
It would be nice if a user had the option to pass a snippet of beaker hostRequires xml which could target a hostname, group of hostnames, driver, cpu family|stepping|model, etc. The hostRequires section can get very detailed, so it would feasible to add a cli option to pass an xml snippet which would modify the existing beaker xml which was sent to beaker, e.g.
<hostRequires>
<and>
<cpu>
<vendor op="=" value="AuthenticAMD"/>
<family op="=" value="21"/>
</cpu>
<system>
<model op="like" value="%Valencia%"/>
</system>
<system_type value=""/>
</and>
</hostRequires>