Create the Blockade admin resource for the REST services.

def generate_admin_resource():
    """Create the Blockade admin resource for the REST services."""
    logger.debug("[#] Setting up the admin resource")
    client = boto3.client('apigateway', region_name=PRIMARY_REGION)
    existing = get_api_gateway_resource("admin")
    if existing:
        logger.debug("[#] API admin resource already created")
        return True
    matches = [x for x in client.get_rest_apis().get('items', list())
               if x['name'] == API_GATEWAY]
    match = matches.pop()
    resource_id = get_api_gateway_resource('/')
    response = client.create_resource(
        restApiId=match.get('id'),
        parentId=resource_id,
        pathPart='admin'
    )
    logger.info("[#] Successfully setup the admin resource")

    return response