Symlink systemd-networkd-wait-online to /bin/true in the live installer

live session to avoid depending on buggy systemd behaviour.

debian/changelog

@@ -1,3 +1,10 @@
+livecd-rootfs (2.526) UNRELEASED; urgency=medium
+
+  * Symlink systemd-networkd-wait-online to /bin/true in the live installer
+    live session to avoid depending on buggy systemd behaviour.
+
+ -- Michael Hudson-Doyle <michael.hudson@ubuntu.com>  Mon, 30 Apr 2018 20:00:02 +1200
+
 livecd-rootfs (2.525) bionic; urgency=medium
 
   * Don't fail to build CPC images if /lib/modules already exists in the

live-build/ubuntu-server/includes.binary/overlay/lib/systemd/systemd-networkd-wait-online

@@ -0,0 +1 @@
+/bin/true