Remove the embedded default user in alpine cloud

There should not be a non-system user in the image.

Let cloud-init handle the users and groups instead.

Signed-off-by: Anders F Björklund <anders.f.bjorklund@gmail.com>

pkg/cidata/cidata.TEMPLATE.d/boot/00-alpine-user-group.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+# Remove the user embedded in the image,
+# and use cloud-init for users and groups.
+test -f /etc/alpine-release || exit 0
+
+if [ "$(id -u alpine 2>&1)" = "1000" ]; then
+	userdel alpine
+	rmdir /home/alpine
+	cloud-init clean --logs
+	reboot
+fi