virt: Rename vmChannels.py to vmchannels.py

Change-Id: Ic2cc66040035baa68ab5d29c483027cab97398c1
Signed-off-by: Vinzenz Feenstra <vfeenstr@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/26192
Reviewed-by: Antoni Segura Puimedon <asegurap@redhat.com>
Reviewed-by: Dan Kenigsberg <danken@redhat.com>
Tested-by: Francesco Romani <fromani@redhat.com>