attendedsysupgrade-common: add package

This package provides the UCI config shared by both, the CLI and Web
clients used for attended-sysupgrade.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

utils/attendedsysupgrade-common/files/attendedsysupgrade.defaults

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+[ -e /etc/config/attendedsysupgrade ] && return 0
+
+touch /etc/config/attendedsysupgrade
+
+uci -q batch <<EOF
+set attendedsysupgrade.server=server
+set attendedsysupgrade.server.url='https://example.org'
+
+set attendedsysupgrade.client=client
+set attendedsysupgrade.client.upgrade_packages='1'
+set attendedsysupgrade.client.auto_search='0'
+set attendedsysupgrade.client.advanced_mode='0'
+
+commit attendedsysupgrade
+EOF