Reference: bnc#885380
Allow Xen based VMs to default to using qcow2
Index: virt-manager-2.1.0/virtinst/support.py
===================================================================
--- virt-manager-2.1.0.orig/virtinst/support.py
+++ virt-manager-2.1.0/virtinst/support.py
@@ -232,7 +232,7 @@ SUPPORT_CONN_WORKING_XEN_EVENTS = _make(
 # This is an arbitrary check to say whether it's a good idea to
 # default to qcow2. It might be fine for xen or qemu older than the versions
 # here, but until someone tests things I'm going to be a bit conservative.
-SUPPORT_CONN_DEFAULT_QCOW2 = _make(hv_version={"qemu": "1.2.0", "test": 0})
+SUPPORT_CONN_DEFAULT_QCOW2 = _make(hv_version={"qemu": "1.2.0", "all": 0})
 SUPPORT_CONN_AUTOSOCKET = _make(hv_libvirt_version={"qemu": "1.0.6"})
 SUPPORT_CONN_PM_DISABLE = _make(hv_version={"qemu": "1.2.0", "test": 0})
 SUPPORT_CONN_QCOW2_LAZY_REFCOUNTS = _make(