Need per arch templates; support ppc64el

[Jon Grimm]

Just opening to keep this in safe place:

From rharper: (download this) and then you can uvt-kvm create --template <template> ...

<domain type='kvm'>
  <os>
    <type arch="ppc64le" machine="pseries">hvm</type>
    <boot dev='hd' />
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <devices>
    <interface type='network'>
      <source network='default'/>
      <model type='virtio'/>
    </interface>
    <serial type='pty'>
      <source path='/dev/pts/3'/>
      <target port='0'/>
    </serial>
    <graphics type='vnc' autoport='yes' listen='127.0.0.1'>
      <listen type='address' address='127.0.0.1'/>
    </graphics>
    <video/>
  </devices>
</domain>