bundles/apt: add flag to disable automatic rebooting

bundles/apt/files/check_unattended_upgrades

@@ -21,6 +21,10 @@ case "$exitcode" in
         echo "Upgrades skipped due to active SSH login"
         exit 1
         ;;
+    reboot)
+        echo "Upgrades require a reboot, but automatic rebooting is disabled"
+        exit 1
+        ;;
     0)
         echo "OK"
         exit 0

bundles/apt/files/upgrade-and-reboot

@@ -46,11 +46,16 @@ fi
 
 if [[ -f /var/run/reboot-required ]]
 then
+    if [[ "$auto_reboot_enabled" == "False" ]]
+    then
+        echo "reboot" > "$statusfile"
+    else
         if [[ -n "$reboot_mail_to" ]]
         then
             date | mail -s "SYSREBOOTNOW $nodename" "$reboot_mail_to"
         fi
         systemctl reboot
-else
-    echo "upgrade-and-reboot for node $nodename is DONE"
     fi
+fi
+
+echo "upgrade-and-reboot for node $nodename is DONE"

bundles/apt/files/upgrade-and-reboot.conf

@@ -1,2 +1,3 @@
 nodename="${node.name}"
 reboot_mail_to="${node.metadata.get('apt/unattended-upgrades/reboot_mail_to', '')}"
+auto_reboot_enabled="${node.metadata.get('apt/unattended-upgrades/reboot-enabled', True)}"