Auto create topics, in our experience, creates more pains than it solves

so we want to undo #107.
It was partially based on a false assumption, as pointed out in
#101 (comment)

Topics are created not only at produce but also at for example kafkacat -C.
Typos cost us more time than it would take to automate topic creation
and run ./bin/kafka-topics.sh in a temporary pod when we haven't automated.

Author: solsson

kafka/10broker-config.yml

@@ -62,7 +62,7 @@ data:
 
     min.insync.replicas=2
 
-    auto.create.topics.enable=true
+    auto.create.topics.enable=false
 
     # The number of threads per data directory to be used for log recovery at startup and flushing at shutdown.
     # This value is recommended to be increased for installations with data dirs located in RAID array.