Import patches-unapplied version 2.444 to ubuntu/artful-proposed

Imported using git-ubuntu import.

Changelog parent: def10927e4

New changelog entries:
  * For now, make sure all automated image builds are on the edge channel.
    Eventually we will want to pass the channel as build metadata instead.

debian/changelog

@@ -1,3 +1,10 @@
+livecd-rootfs (2.444) artful; urgency=medium
+
+  * For now, make sure all automated image builds are on the edge channel.
+    Eventually we will want to pass the channel as build metadata instead.
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Fri, 28 Apr 2017 18:22:45 -0700
+
 livecd-rootfs (2.443) artful; urgency=medium
 
   * Mark autopkgtests isolation-machine since debootstrap won't work in a

live-build/auto/build

@@ -19,7 +19,9 @@ if [ "${IMAGEFORMAT:-}" = "ubuntu-image" ]; then
 	# Use ubuntu-image instead of live-build
 	apt-get install -qqy pxz
 
-	env SNAPPY_STORE_NO_CDN=1 ubuntu-image -o livecd."$PROJECT".img livecd."$PROJECT".model-assertion
+	env SNAPPY_STORE_NO_CDN=1 \
+	ubuntu-image -c edge \
+		-o livecd."$PROJECT".img livecd."$PROJECT".model-assertion
 	pxz -T4 livecd."$PROJECT".img
 	exit 0
 fi