force host-based addressing in S3 client config

aws-replicator/tests/test_proxy_requests.py

@@ -4,6 +4,7 @@
 
 import boto3
 import pytest
+from boto3 import Config
 from botocore.exceptions import ClientError
 from localstack.aws.connect import connect_to
 from localstack.utils.aws.arns import sqs_queue_arn, sqs_queue_url_for_arn
@@ -48,9 +49,12 @@ def test_s3_requests(start_aws_proxy, s3_create_bucket, metadata_gzip, host_addr
 
     # create clients
     if host_addressing:
-        s3_client = connect_to(endpoint_url="http://s3.localhost.localstack.cloud:4566").s3
+        s3_client = connect_to(
+            endpoint_url="http://s3.localhost.localstack.cloud:4566",
+            config=Config(s3={"addressing_style": "virtual"}),
+        ).s3
     else:
-        s3_client = connect_to(endpoint_url="http://localhost:4566").s3
+        s3_client = connect_to().s3
     s3_client_aws = boto3.client("s3")
 
     # list buckets to assert that proxy is up and running