remove the old entries on change

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>

cdist/conf/type/__cron/gencode-remote

@@ -49,6 +49,29 @@ state_should="$(cat "$__object/parameter/state" 2>/dev/null || echo "present")"
 
 [ "$state_is" = "$state_should" ] && exit 0
 
+# If anything is going to change, ensure the old entries are
+# not present anymore
+
+# These are the old markers
+prefix="#cdist:__cron/$__object_id"
+suffix="#/cdist:__cron/$__object_id"
+cat << DONE
+crontab -u $user -l | awk -v prefix="$prefix" -v suffix="$suffix" '
+{
+   if (index(\$0,prefix)) {
+      triggered=1
+   }
+   if (triggered) {
+      if (index(\$0,suffix)) {
+            triggered=0
+      }
+   } else {
+      print
+   }
+}
+' | crontab -u $user -
+DONE
+
 case "$state_should" in
     present)
         echo "("

docs/changelog.2.2

@@ -0,0 +1,10 @@
+Changelog
+---------
+
+	* Changes are always commented with their author in (braces)
+	* Exception: No braces means author == Nico Schottelius
+
+2.2.0:
+	* Type __cron: Dropped support for old internal format
+	  Using this version prior to running cdist 2.1.2 will
+	  break add the cron entries twice.