When PUTting an S3 object to Localstack with attached Metadata, if a key contains an underscore it is replaced with a dash.

However, when the same request is performed against the real S3, the key is not modified.

Example Input:
key_with_underscores => test

Localstack Result:
key-with-underscores => test

S3 Result:
key_with_underscores => test

Localstack Version: 0.10.5

Tested using AWS v2 S3 client
""" check whether any of the event types in `events` matches the
        given `action` and `api_method`, and return the first match. """
    events = events or []
    for event in events:
        regex = event.replace('*', '[^:]*')
        action_string = 's3:%s:%s' % (action, api_method)
        match = re.match(regex, action_string)
        if match:
            return match
    return False
def filter_rules_match(filters, object_path):
    """ check whether the given object path matches all of the given filters """
    filters = filters or {}
    s3_filter = _get_s3_filter(filters)
    for rule in s3_filter.get('FilterRule', []):
        rule_name_lower = rule['Name'].lower()
        if rule_name_lower == 'prefix':
            if not prefix_with_slash(object_path).startswith(prefix_with_slash(rule['Value'])):
                return False
        elif rule_name_lower == 'suffix':
            if not object_path.endswith(rule['Value']):
                return False
        else:
            LOGGER.warning('Unknown filter name: "%s"' % rule['Name'])
    return True
def _get_s3_filter(filters):