# Type of request: This is a ...

bug report

# Detailed description

aws cloudformation list-stack-resources --stack-name "mystack" 
{
    "StackResourceSummaries": [
        {
            "LogicalResourceId": "MyS3Bucket",
            "PhysicalResourceId": "mystack",
            "ResourceType": "AWS::S3::Bucket",
            "ResourceStatus": "CREATE_COMPLETE"
        }
    ]
}

**LastUpdatedTimestamp** is not returned.
...

## Expected behavior

Trying to use Localstack with some dependencies which expects the field LastUpdatedTimestamp. I saw in few older posts the field was being returned.



import json
import logging
import traceback
import xmltodict
from flask import Flask, request
from requests.models import Response
from localstack.utils.aws import aws_stack
from localstack.utils.common import (
    parse_request_data, short_uid, long_uid, clone, clone_safe, select_attributes,
    timestamp_millis, recurse_object)
from localstack.utils.cloudformation import template_deployer, template_preparer
from localstack.services.generic_proxy import RegionBackend
from localstack.utils.aws.aws_responses import (
    requests_response_xml, requests_to_flask_response, flask_error_response_xml)
APP_NAME = 'cloudformation_api'
app = Flask(APP_NAME)
LOG = logging.getLogger(__name__)
XMLNS_CF = 'http://cloudformation.amazonaws.com/doc/2010-05-15/'
class CloudFormationRegion(RegionBackend):
    def __init__(self):