Updated CoreS3RegionProp value

Author: gmsdelmundo

src/main/java/com/uid2/shared/Const.java

@@ -43,7 +43,7 @@ public static class Config {
         public static final String SecretAccessKeyProp = "aws_secret_access_key";
         public static final String S3EndpointProp = "aws_s3_endpoint";
         public static final String CoreS3BucketProp = "core_s3_bucket";
-        public static final String CoreS3RegionProp = "core_s3_aws_region";
+        public static final String CoreS3RegionProp = "core_s3_region";
         public static final String OptOutS3BucketProp = "optout_s3_bucket";
 
         // Config stores