debian/control: Update Vcs-*: URLs

debian/control

@@ -4,7 +4,7 @@ Priority: optional
 Build-Depends: debhelper (>= 7)
 Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
 Standards-Version: 3.6.1.0
-Vcs-Bzr: http://bazaar.launchpad.net/~ubuntu-core-dev/livecd-rootfs/trunk
+Vcs-Git: https://git.launchpad.net/livecd-rootfs -b ubuntu/precise
 
 Package: livecd-rootfs
 Architecture: all