Quite minimal resource limits on the topic-admin script

now that we're running Java 11.

Chosen based on trial and error: 80Mi got OOMKilled, 100m cpu took >twice the time to complete.

Author: solsson

events-kube/topic-create.yaml

@@ -21,4 +21,8 @@ spec:
         -   "12"
         - --replication-factor
         -   "2"
+        resources:
+          limits:
+            cpu: 200m
+            memory: 100Mi
       restartPolicy: Never