It is my understanding that setting an environment varialbe `TEST_AWS_ACCOUNT_ID` for localstack sets that as the AWS account for the user in localstack.

However, setting it does not actually change any ARNs. For example:

1. Start localstack using `TEST_AWS_ACCOUNT_ID="111111111111" DEBUG=1 localstack start`
2. Deploy anything with an ARN (in this example I deployed a lambda)
3. Check the ARN. Example output for lambda:
```json
$ awslocal lambda list-functions
{
    "Functions": [
        {
            "FunctionName": "localtest-local-hello",
            "FunctionArn": "arn:aws:lambda:us-east-1:000000000000:function:localtest-local-hello",
            "Runtime": "nodejs10.x",
            "Role": "test_role",
            "Handler": "handler.hello",
            "CodeSize": 3077,
            "Description": "",
            "Timeout": 6,
            "MemorySize": 1024,
            "LastModified": "2019-11-06T06:43:53.451+0000",
            "CodeSha256": "V77gR13o90ET7+XquXBBc3Rxr1qDu1bE7S+A0Wbx5ys=",
            "Version": "$LATEST",
            "TracingConfig": {
                "Mode": "PassThrough"
            },
            "RevisionId": "3d4ed679-c1a9-4b7e-ad9e-f27e8543c5e9"
        }
    ]
}
```

ARN is still 000000000000
""" Remove None values recursively in the given object. """
    def remove_nones(o, **kwargs):
        if isinstance(o, dict):
            for k, v in dict(o).items():
                if v is None:
                    o.pop(k)
        return o
    result = common.recurse_object(params, remove_nones)
    return result
def deploy_resource(resource_id, resources, stack_name):
    resource = resources[resource_id]
    resource_type = get_resource_type(resource)
    func_details = RESOURCE_TO_FUNCTION.get(resource_type)
    if not func_details:
        LOG.warning('Resource type not yet implemented: %s' % resource_type)
        return
    LOG.debug('Deploying resource type "%s" id "%s"' % (resource_type, resource_id))
    func_details = func_details[ACTION_CREATE]
    func_details = func_details if isinstance(func_details, list) else [func_details]
    results = []
    for func in func_details:
        client = get_client(resource, func)
        if client: