MacOS 10.14.6 Mojave.
Node v10.15.3
LocalStack - docker image 0.10.4

When invoking a Lambda from Node.js code.


    const lambda = new Aws.Lambda(creds);
    
    const payload = {};
    
    const clientContext = {
        invokedFunctionArn: this._workerArn
    };
    
    const params = {
        FunctionName: this._workerArn,
        InvocationType: "RequestResponse", // "DryRun",
        LogType: 'Tail', // "None", "Tail"
        ClientContext: JSON.stringify(clientContext),
        Payload: JSON.stringify(payload)
    };
    
    console.log(`DEBUG: Executing lambda ${JSON.stringify(params)}`);
    
    lambda.invoke(params, function (err, data) {
        console.log(`DEBUG: Printing lambda return arguments`);
        console.log(JSON.stringify(arguments));
        console.log(data.LogResult);
    });```
DEBUG: Printing lambda return arguments
{"0":null,"1":{"StatusCode":200,"Payload":"null"}}
undefined
```

Expecting to see the Lambda execution log in `data.LogResult`, but no such object returned,
yet Localstack Cloudwatch logs recorded the execution logs correctly.


```
EVENTS	75	1570381308926.664	+51733/05/27/[$LATEST]629146bb	START RequestId: dbd86068-78c8-1a62-29ca-9c0a4a8580c3 Version: $LATEST	1570381306039
EVENTS	76	1570381308926.664	+51733/05/27/[$LATEST]629146bb	2019-10-06T17:01:47.924Z	dbd86068-78c8-1a62-29ca-9c0a4a8580c3	INFO	DEBUG: LOCALSTACK_HOSTNAME=172.17.0.1	1570381306520
...
EVENTS	79	1570381308926.664	+51733/05/27/[$LATEST]629146bb	END RequestId: dbd86068-78c8-1a62-29ca-9c0a4a8580c3	1570381307961
EVENTS	80	1570381308926.664	+51733/05/27/[$LATEST]629146bb	REPORT RequestId: dbd86068-78c8-1a62-29ca-9c0a4a8580c3	Duration: 16.05 ms	Billed Duration: 100 ms	Memory Size: 1536 MB	Max Memory Used: 57 MB		1570381308442
```

What I'm missing? Why it doesn't return logs on invoke?

Thanks



┆Issue is synchronized with this [Jira Bug](https://localstack.atlassian.net/browse/LOC-125) by [Unito](https://www.unito.io/learn-more)

kms_key_arn = 'arn:aws:kms:us-east-1:000000000000:key11'
        vpc_config = {
            'SubnetIds': ['subnet-123456789'],
            'SecurityGroupIds': ['sg-123456789']
        }
        tags = {
            'env': 'testing'
        }
        kwargs = {
            'FunctionName': func_name,
            'Runtime': LAMBDA_RUNTIME_PYTHON37,
            'Handler': LAMBDA_DEFAULT_HANDLER,
            'Role': LAMBDA_TEST_ROLE,
            'KMSKeyArn': kms_key_arn,
            'Code': {
                'ZipFile': create_lambda_archive(load_file(TEST_LAMBDA_PYTHON_ECHO), get_content=True)
            },
            'Timeout': 3,
            'VpcConfig': vpc_config,
            'Tags': tags
        }
        client = aws_stack.connect_to_service('lambda')
        client.create_function(**kwargs)
        rs = client.get_function(
            FunctionName=func_name
        )
        self.assertEqual(rs['Configuration'].get('KMSKeyArn', ''), kms_key_arn)
        self.assertEqual(rs['Configuration'].get('VpcConfig', {}), vpc_config)
        self.assertEqual(rs['Tags'], tags)
        client.delete_function(FunctionName=func_name)