bundles/cron: use MAILTO=, rework metadata syntax

bundles/apt/files/check_unattended_upgrades

@@ -21,8 +21,6 @@ case "$exitcode" in
         echo "Upgrades skipped due to active SSH login"
         exit 1
         ;;
-    reboot)
-        ;;
     0)
         if [[ -f /var/run/reboot-required ]]
         then

bundles/apt/metadata.py

@@ -18,7 +18,7 @@ defaults = {
 
 
 @metadata_reactor.provides(
-    'cron/upgrade-and-reboot'
+    'cron/jobs/upgrade-and-reboot'
 )
 def patchday(metadata):
     day = metadata.get('apt/unattended-upgrades/day')
@@ -26,10 +26,12 @@ def patchday(metadata):
 
     return {
         'cron': {
-            'upgrade-and-reboot': '{minute} {hour} * * {day}    root    /usr/local/sbin/upgrade-and-reboot'.format(
-                minute=node.magic_number % 30,
-                hour=hour,
-                day=day,
-            ),
+            'jobs': {
+                'upgrade-and-reboot': '{minute} {hour} * * {day}    root    /usr/local/sbin/upgrade-and-reboot'.format(
+                    minute=node.magic_number % 30,
+                    hour=hour,
+                    day=day,
+                ),
+            },
         },
     }