Run the ingester workaround every 10min instead of 30min

This helps to prevent NodeDrainStuck alerts from firing in the situation
where the first ingester pod doesn't come up during the maintenance.

class/defaults.yml

@@ -130,7 +130,7 @@ parameters:
 
     workaround:
       ingester_fix:
-        schedule: '0,30 * * * *'
+        schedule: '*/10 * * * *'
         sleep_time: 2m
 
   openshift4_elasticsearch_operator: