[bitnami/kafka] fix: Setup of sasl authentication to external zookeeper (#23550)

Signed-off-by: Christian Kuhn <phello@gmx.de>
Signed-off-by: Carlos Rodríguez Hernández <carlosrh@vmware.com>
Signed-off-by: Rafael Ríos Saavedra <rrios@vmware.com>
Co-authored-by: Carlos Rodríguez Hernández <carlosrh@vmware.com>
Co-authored-by: Rafael Ríos Saavedra <rrios@vmware.com>

bitnami/kafka/templates/broker/statefulset.yaml

@@ -306,6 +306,11 @@ spec:
             - name: kafka-config
               mountPath: /opt/bitnami/kafka/config/server.properties
               subPath: server.properties
+            {{- if .Values.sasl.zookeeper.user }}
+            - name: kafka-config
+              mountPath: /opt/bitnami/kafka/config/kafka_jaas.conf
+              subPath: kafka_jaas.conf
+            {{- end }}
             - name: tmp
               mountPath: /tmp
             {{- if or .Values.log4j .Values.existingLog4jConfigMap }}