When creating the following bucket notification configuration:
```json
{
    "QueueConfigurations": [
        {
            "Id": "some-id",
            "QueueArn": "arn:aws:sqs:eu-central-1:123456789:my-queue",
            "Events": [
                "s3:ObjectCreated:*"
            ],
            "Filter": {
                "Key": {
                    "FilterRules": [
                        {
                            "Name": "Prefix",
                            "Value": "path/to/folder/"
                        },
                        {
                            "Name": "Suffix",
                            "Value": ".json"
                        }
                    ]
                }
            }
        }
    ]
}
```
and adding some files to S3, I get the following errors from localstack:

```
localstack.services.s3.s3_listener: Unknown filter name: "Prefix"
localstack.services.s3.s3_listener: Unknown filter name: "Suffix"
```

When I change the FilterRule names from "Prefix" to "prefix" and "Suffix" to "suffix", everything works. AWS supports the capitalised name, so this looks like a bug in localstack.
if domain_name not in ES_DOMAINS:
        return error_response(error_type='ResourceNotFoundException')
    result = get_domain_status(domain_name, deleted=True)
    ES_DOMAINS.pop(domain_name)
    
    event_publisher.fire_event(event_publisher.EVENT_ES_DELETE_DOMAIN,
        payload={'n': event_publisher.get_hash(domain_name)})
    return jsonify(result)
@app.route('%s/tags' % API_PREFIX, methods=['GET', 'POST'])
def add_list_tags():
    if request.method == 'GET' and request.args.get('arn'):
        response = {
            'TagList': [
                {
                    'Key': 'Example1',
                    'Value': 'Value'
                },
                {
                    'Key': 'Example2',
                    'Value': 'Value'
                }
            ]
        }
        return jsonify(response)
    return jsonify({})
def serve(port, quiet=True):
    generic_proxy.serve_flask_app(app=app, port=port, quiet=quiet)