Moves the extensions mechanism to kafka core

Author: solsson

cruise-control/20kafka-broker-reporter-patch.yml

@@ -23,14 +23,3 @@ spec:
       $setElementOrder/initContainers:
       - name: init-config
       - name: cruise-control-reporter
-      containers:
-      - name: broker
-        env:
-        - name: CLASSPATH
-          value: /opt/kafka/libs/extensions/cruise-control-metrics-reporter.jar
-        volumeMounts:
-        - name: extensions
-          mountPath: /opt/kafka/libs/extensions
-      volumes:
-      - name: extensions
-        emptyDir: {}

kafka/50kafka.yml

@@ -41,10 +41,14 @@ spec:
           mountPath: /etc/kafka-configmap
         - name: config
           mountPath: /etc/kafka
+        - name: extensions
+          mountPath: /opt/kafka/libs/extensions
       containers:
       - name: broker
         image: solsson/kafka:2.1.0@sha256:ac3f06d87d45c7be727863f31e79fbfdcb9c610b51ba9cf03c75a95d602f15e1
         env:
+        - name: CLASSPATH
+          value: /opt/kafka/libs/extensions/*
         - name: KAFKA_LOG4J_OPTS
           value: -Dlog4j.configuration=file:/etc/kafka/log4j.properties
         - name: JMX_PORT
@@ -81,12 +85,16 @@ spec:
           mountPath: /etc/kafka
         - name: data
           mountPath: /var/lib/kafka/data
+        - name: extensions
+          mountPath: /opt/kafka/libs/extensions
       volumes:
       - name: configmap
         configMap:
           name: broker-config
       - name: config
         emptyDir: {}
+      - name: extensions
+        emptyDir: {}
   volumeClaimTemplates:
   - metadata:
       name: data