<!-- Love localstack? Please consider supporting our collective:
👉  https://opencollective.com/localstack/donate -->

# Type of request: This is a ...

[ x ] bug report
[ ] feature request

# Detailed description

When I try to list stacks and filter the stack status, it lists all the stacks rather than filter them out.

I saw someone had this issue before and was meant to be fixed, but doesnt seem like its fixed:
- https://github.com/localstack/localstack/issues/2698

## Expected behavior

Stacks should be filtered


## Actual behavior

All stacks are returned

# Steps to reproduce

Run latest docker version of localstack.
Create new stack
Try to run something like:
aws --endpoint-url=http://localhost:4566 cloudformation list-stacks --stack-status-filter DELETE_FAILED

It will return all stacks when it should return an empty list

## Command used to start LocalStack
docker run --network host -d -e DEFAULT_REGION="eu-west-1" localstack/localstack:latest

## Client code (AWS SDK code snippet, or sequence of "awslocal" commands)
aws --endpoint-url=http://localhost:4566 cloudformation list-stacks --stack-status-filter DELETE_FAILED

Using boto3, the same thing happens:
response = self.__cloudformation_client.list_stacks(StackStatusFilter=['CREATE_FAILED'])

...

state = CloudFormationRegion.get()
    set_name = req_params.get('StackSetName')
    stack_set = [sset for sset in state.stack_sets.values() if sset.stack_set_name == set_name]
    if not stack_set:
        return not_found_error('Stack set named "%s" does not exist' % set_name)
    for instance in stack_set[0].stack_instances:
        deployer = template_deployer.TemplateDeployer(instance.stack)
        deployer.delete_stack()
    return {}
def update_stack(req_params):
    stack_name = req_params.get('StackName')
    stack = find_stack(stack_name)
    if not stack:
        return not_found_error('Unable to update non-existing stack "%s"' % stack_name)
    template_preparer.prepare_template_body(req_params)
    template = template_preparer.parse_template(req_params['TemplateBody'])
    new_stack = Stack(req_params, template)
    deployer = template_deployer.TemplateDeployer(stack)
    try:
        deployer.update_stack(new_stack)
    except Exception as e:
        stack.set_stack_status('UPDATE_FAILED')
        msg = 'Unable to update stack "%s": %s' % (stack_name, e)
        LOG.debug('%s %s' % (msg, traceback.format_exc()))
        return error_response(msg, code=400, code_string='ValidationError')
    result = {'StackId': stack.stack_id}
    return result
def update_stack_set(req_params):