sqs.changeMessageVisibility according to [this](https://docs.aws.amazon.com/AWSSimpleQueueService/latest/APIReference/API_ChangeMessageVisibility.html#API_ChangeMessageVisibility_Examples) makes a request directly to the Queue's URL rather than via the SQS Endpoint. (I'm already setting SQS endpoint to LOCALSTACK_HOSTNAME - makes no difference for this call)..

In localstack the queue URL host returned is by default set to the value of HOSTNAME_EXTERNAL, which I'm setting to localstack, but calling this method within a lambda, does not work and I get the error:

```
UnknownEndpoint: Inaccessible host: `localstack'. This service may not be available in the `us-east-1' region. 
```

So, how can I make the queue URL accessible from within a lambda using localstack? Effectively I need to make **http://localstack** accessible from within lambda.

I'm using the following cmd to start localstack:

```
LAMBDA_EXECUTOR=docker-reuse DEBUG=1 LAMBDA_REMOTE_DOCKER=0 DATA_DIR=/tmp/localstack/data HOSTNAME_EXTERNAL=localstack localstack start
```
if method != 'GET' or path != '/':
        return
    response._content = re.sub(r'([0-9])</CreationDate>', r'\1Z</CreationDate>', to_str(response._content))
def fix_etag_for_multipart(data, headers, response):
    
    if headers.get(CONTENT_SHA256_HEADER) == STREAMING_HMAC_PAYLOAD:
        try:
            if b'chunk-signature=' not in to_bytes(data):
                return
            correct_hash = md5(strip_chunk_signatures(data))
            tags = r'<ETag>%s</ETag>'
            pattern = r'(&#34;)?([^<&]+)(&#34;)?'
            replacement = r'\g<1>%s\g<3>' % correct_hash
            response._content = re.sub(tags % pattern, tags % replacement, to_str(response.content))
            if response.headers.get('ETag'):
                response.headers['ETag'] = re.sub(pattern, replacement, response.headers['ETag'])
        except Exception:
            pass
def remove_xml_preamble(response):