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
```
integrations=[], env=None, region_name=None):
    client = connect_to_service('apigateway', env=env, region_name=region_name)
    for integration in integrations:
        req_templates = integration.get('requestTemplates') or {}
        res_templates = integration.get('responseTemplates') or {}
        success_code = integration.get('successCode') or '200'
        client_error_code = integration.get('clientErrorCode') or '400'
        server_error_code = integration.get('serverErrorCode') or '500'
        
        client.put_integration(
            restApiId=api_id,
            resourceId=resource_id,
            httpMethod=method['httpMethod'],
            integrationHttpMethod=method.get('integrationHttpMethod') or method['httpMethod'],
            type=integration['type'],
            uri=integration['uri'],
            requestTemplates=req_templates
        )
        response_configs = [
            {'pattern': '^2.*', 'code': success_code, 'res_templates': res_templates},
            {'pattern': '^4.*', 'code': client_error_code, 'res_templates': {}},
            {'pattern': '^5.*', 'code': server_error_code, 'res_templates': {}}
        ]