[NO ISSUE][OTH]: return mock client created

Change-Id: I090d42a8398a8ded8c86f98510a4075d4a278bf3
Reviewed-on: https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/17757
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Hussain Towaileb <hussainht@gmail.com>
diff --git a/asterixdb/asterix-app/src/test/java/org/apache/asterix/api/common/LocalCloudUtil.java b/asterixdb/asterix-app/src/test/java/org/apache/asterix/api/common/LocalCloudUtil.java
index 39af667..773fa4e 100644
--- a/asterixdb/asterix-app/src/test/java/org/apache/asterix/api/common/LocalCloudUtil.java
+++ b/asterixdb/asterix-app/src/test/java/org/apache/asterix/api/common/LocalCloudUtil.java
@@ -54,7 +54,7 @@
         startS3CloudEnvironment(true);
     }
 
-    public static void startS3CloudEnvironment(boolean cleanStart) {
+    public static S3Mock startS3CloudEnvironment(boolean cleanStart) {
         if (cleanStart) {
             FileUtils.deleteQuietly(new File(MOCK_FILE_BACKEND));
         }
@@ -78,6 +78,7 @@
         client.createBucket(CreateBucketRequest.builder().bucket(CLOUD_STORAGE_BUCKET).build());
         LOGGER.info("Created bucket {} for cloud storage", CLOUD_STORAGE_BUCKET);
         client.close();
+        return s3MockServer;
     }
 
     private static void shutdownSilently() {