upgrade zookeeper and kafka images (#1058)

* fix

* fix build

* typo

* trigger

spring-cloud-kubernetes-integration-tests/spring-cloud-kubernetes-configuration-watcher-it/src/test/resources/kafka/kafka-deployment.yaml

@@ -17,19 +17,41 @@ spec:
         app: kafka
         component: kafka-broker
     spec:
+      # otherwise we will get an env var "KAFKA_PORT" (from service name: "kafka" and appended with "_PORT")
+      # and this will cause this problem: https://github.com/confluentinc/cp-docker-images/blob/master/debian/kafka/include/etc/confluent/docker/configure#L58-L62
+      # Another solution is to rename the service.
+      enableServiceLinks: false
       containers:
-      - name: kafka
-        image: wurstmeister/kafka:2.13-2.6.0
-        ports:
-        - containerPort: 9092
-        env:
-          - name: KAFKA_PORT
-            value: "9092"
-          - name: KAFKA_ADVERTISED_PORT
-            value: "9092"
-          - name: KAFKA_ADVERTISED_HOST_NAME
-            valueFrom:
-              fieldRef:
-                fieldPath: status.podIP
-          - name: KAFKA_ZOOKEEPER_CONNECT
-            value: zookeeper:2181
+        - name: kafka
+          image: confluentinc/cp-kafka:7.2.1
+          ports:
+            - containerPort: 9092
+          env:
+            - name: KAFKA_LISTENERS
+              value: "INTERNAL://0.0.0.0:9092,OUTSIDE://0.0.0.0:9094"
+
+            - name: KAFKA_LISTENER_SECURITY_PROTOCOL_MAP
+              value: "INTERNAL:PLAINTEXT,OUTSIDE:PLAINTEXT"
+
+            - name: KAFKA_ZOOKEEPER_CONNECT
+              value: "INTERNAL://kafka:9092,OUTSIDE://localhost:9094"
+
+            - name: KAFKA_ADVERTISED_LISTENERS
+              value: "INTERNAL://kafka:9092,OUTSIDE://localhost:9094"
+
+            - name: KAFKA_INTER_BROKER_LISTENER_NAME
+              value: "INTERNAL"
+
+            - name: KAFKA_ADVERTISED_HOST_NAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
+
+            - name: KAFKA_ZOOKEEPER_CONNECT
+              value: zookeeper:2181
+
+            # we have enabled auto creation of topics and when this happens there is a replication factor of 3
+            # that is set automatically. Since we don't have that many, producers will fail.
+            # This setting ensures that there is just one replication
+            - name: KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR
+              value: 1

spring-cloud-kubernetes-integration-tests/spring-cloud-kubernetes-configuration-watcher-it/src/test/resources/zookeeper/zookeeper-deployment.yaml

@@ -18,12 +18,14 @@ spec:
         component: zookeeper
     spec:
       containers:
-      - name: zookeeper
-        image: zookeeper:3.6.2
-        ports:
-        - containerPort: 2181
-        env:
-        - name: ZOOKEEPER_ID
-          value: "1"
-        - name: ZOOKEEPER_SERVER_1
-          value: zookeeper
+        - name: zookeeper
+          image: confluentinc/cp-zookeeper:7.2.1
+          ports:
+            - containerPort: 2181
+          env:
+            - name: ZOOKEEPER_ID
+              value: "1"
+            - name: ZOOKEEPER_SERVER_1
+              value: zookeeper
+            - name: ZOOKEEPER_CLIENT_PORT
+              value: 2181