Ensure seed part. is mounted; wait for getty

debian/changelog

@@ -1,3 +1,12 @@
+livecd-rootfs (2.636) UNRELEASED; urgency=medium
+
+  * Ensure seed partition is mounted on no-cloud images which use system-boot
+    as their seed (LP: #1860046)
+  * Have getty wait for cloud-init to complete to ensure that the default
+    user exists before presenting a login prompt
+
+ -- Dave Jones <dave.jones@canonical.com>  Fri, 24 Jan 2020 15:17:56 +0000
+
 livecd-rootfs (2.635) focal; urgency=medium
 
   * Preserve apt preferences created by any package we install (i.e.

live-build/ubuntu-cpc/hooks.d/chroot/999-ubuntu-image-customization.chroot

@@ -19,5 +19,19 @@ datasource_list: [ NoCloud, None ]
 datasource:
   NoCloud:
     fs_label: system-boot
+EOF
+    mkdir -p /etc/systemd/system/cloud-init-local.service.d
+    cat << EOF > /etc/systemd/system/cloud-init-local.service.d/mount-seed.conf
+# Ensure our customized seed location is mounted prior to execution
+
+[Unit]
+RequiresMountsFor=/boot/firmware
+EOF
+    mkdir -p /etc/systemd/system/cloud-config.service.d
+    cat << EOF > /etc/systemd/system/cloud-config.service.d/getty-wait.conf
+# Wait for cloud-init to finish (creating users, etc.) before running getty
+
+[Unit]
+Before=getty.target
 EOF
 fi