We're using an old version of `boto` (through `moto`) to detect the available regions for Lambda (and other APIs). We should switch from `boto` to the newer `boto3` library, which includes the up-to-date endpoints.

```
code/localstack/localstack/services/cloudformation/cloudformation_starter.py", line 502, in Lambda_create_from_cloudformation_json
    return Lambda_create_from_cloudformation_json_orig(resource_name, cloudformation_json, region_name)
  File "/opt/code/localstack/.venv/lib/python3.7/site-packages/moto/awslambda/models.py", line 519, in create_from_cloudformation_json
    backend = lambda_backends[region_name]
KeyError: 'eu-west-2'
```
try:
            return DynamoDB_Table_get_cfn_attribute_orig(self, attribute_name)
        except Exception:
            if attribute_name == 'Arn':
                return aws_stack.dynamodb_table_arn(table_name=self.name)
            raise
    DynamoDB_Table_get_cfn_attribute_orig = dynamodb_models.Table.get_cfn_attribute
    dynamodb_models.Table.get_cfn_attribute = DynamoDB_Table_get_cfn_attribute
    
    def DynamoDB2_Table_get_cfn_attribute(self, attribute_name):
        if attribute_name == 'Arn':
            return aws_stack.dynamodb_table_arn(table_name=self.name)
        elif attribute_name == 'StreamArn':
            if (self.stream_specification or {}).get('StreamEnabled'):
                return aws_stack.dynamodb_stream_arn(self.name, 'latest')
            return None
        raise UnformattedGetAttTemplateException()
    dynamodb2_models.Table.get_cfn_attribute = DynamoDB2_Table_get_cfn_attribute
    
    def SQS_Queue_get_cfn_attribute(self, attribute_name):