Fix unit tests that failed due to rebasing the main branch

Signed-off-by: Gantigmaa Selenge <[email protected]>

Author: tinaselenge

cluster-operator/src/main/java/io/strimzi/operator/cluster/model/KafkaCluster.java

@@ -1461,6 +1461,7 @@ private List<VolumeMount> getVolumeMounts(Storage storage, ContainerTemplate con
                 volumeMountList.add(VolumeUtils.createVolumeMount(INIT_VOLUME_NAME, INIT_VOLUME_MOUNT));
             }
 
+            boolean oauthVolumeMountAdded = false;
             // Listener specific volumes related to their specific authentication or encryption settings
             for (GenericKafkaListener listener : listeners) {
                 String identifier = ListenersUtils.identifier(listener);
@@ -1471,9 +1472,11 @@ private List<VolumeMount> getVolumeMounts(Storage storage, ContainerTemplate con
                     volumeMountList.add(VolumeUtils.createVolumeMount("custom-" + identifier + "-certs", "/opt/kafka/certificates/custom-" + identifier + "-certs"));
                 }
 
-                if (ListenersUtils.isListenerWithOAuth(listener) && listener.getAuth() instanceof KafkaListenerAuthenticationOAuth oauth && oauth.getTlsTrustedCertificates() != null)   {
+                if (!oauthVolumeMountAdded && ListenersUtils.isListenerWithOAuth(listener) && listener.getAuth() instanceof KafkaListenerAuthenticationOAuth oauth && oauth.getTlsTrustedCertificates() != null)   {
                     String oauthTrustedCertsSecret = KafkaResources.internalOauthTrustedCertsSecretName(cluster);
                     volumeMountList.add(VolumeUtils.createVolumeMount(oauthTrustedCertsSecret, TRUSTED_CERTS_BASE_VOLUME_MOUNT + "/" + oauthTrustedCertsSecret));
+                    // the internal oauth trusted secret does not need to be volume mounted for each listener, as it contains all the trusted certificates
+                    oauthVolumeMountAdded = true;
                 }
 
                 if (ListenersUtils.isListenerWithCustomAuth(listener)) {