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# 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'])

...

def __init__(self):
        
        self.stacks = {}
        
        self.stack_sets = {}
    @property
    def exports(self):
        exports = []
        output_keys = {}
        for stack_id, stack in self.stacks.items():
            for output in stack.outputs:
                export_name = output.get('ExportName')
                if not export_name:
                    continue
                if export_name in output_keys:
                    
                    LOG.warning('Found duplicate export name %s in stacks: %s %s' % (
                        export_name, output_keys[export_name], stack.stack_id))
                entry = {
                    'ExportingStackId': stack.stack_id,
                    'Name': export_name,
                    'Value': output['OutputValue']
                }
                exports.append(entry)
                output_keys[export_name] = stack.stack_id
        return exports
class StackSet(object):