Set kafka version to 7.9.1 in docker-compose and helm charts.
CSITs are passing with this version.
Issue-ID: POLICY-5408
Change-Id: I5731719b7fe3c62660692b7b415e465c9264f00e
Signed-off-by: danielhanrahan <daniel.hanrahan@est.tech>
       ZOOKEEPER_CLIENT_PORT: 2181
 
   kafka:
-    image: nexus3.onap.org:10001/confluentinc/cp-kafka:latest
+    image: nexus3.onap.org:10001/confluentinc/cp-kafka:7.9.1
     container_name: kafka
     hostname: kafka
     depends_on:
 
     spec:
       containers:
       - name: broker
-        image: confluentinc/cp-kafka:latest
+        image: confluentinc/cp-kafka:7.9.1
         ports:
         - containerPort: 9092
         command: ["bash", "-c", "unset KAFKA_PORT; /etc/confluent/docker/run"]