XenAPI: Update to a newer Cirros image

Update to 0.3.4 as it has support for config drive v2

Change-Id: Id8143f16fb3f0b6ce82c1332e8f695ac739a9e8c

Author: Bob Ball

stackrc

@@ -564,8 +564,8 @@ case "$VIRT_DRIVER" in
         DEFAULT_IMAGE_NAME=${DEFAULT_IMAGE_NAME:-cirros-0.3.2-i386-disk.vmdk}
         IMAGE_URLS=${IMAGE_URLS:-"http://partnerweb.vmware.com/programs/vmdkimage/cirros-0.3.2-i386-disk.vmdk"};;
     xenserver)
-        DEFAULT_IMAGE_NAME=${DEFAULT_IMAGE_NAME:-cirros-0.3.0-x86_64-disk}
-        IMAGE_URLS=${IMAGE_URLS:-"https://github.com/downloads/citrix-openstack/warehouse/cirros-0.3.0-x86_64-disk.vhd.tgz"}
+        DEFAULT_IMAGE_NAME=${DEFAULT_IMAGE_NAME:-cirros-0.3.4-x86_64-disk}
+        IMAGE_URLS=${IMAGE_URLS:-"http://ca.downloads.xensource.com/OpenStack/cirros-0.3.4-x86_64-disk.vhd.tgz"}
         IMAGE_URLS+=",http://download.cirros-cloud.net/${CIRROS_VERSION}/cirros-${CIRROS_VERSION}-x86_64-uec.tar.gz";;
     ironic)
         # Ironic can do both partition and full disk images, depending on the driver