Remark: this might be the same issue as: https://github.com/localstack/localstack/issues/1055

There is some kind of error that is occurring when trying to run a lambda function using the invoke command from the javascript SDK. Not sure if I'm doing anything wrong. please advise. This works with a live lambda function.

Call from AWS SDK (Javascript)
```
const { source, identifier } = ctx.params;

const bodyBuffer = await requestToBuffer(ctx.request.req);
const bodyBase64 = bodyBuffer.toString('base64');

const payload = {
        pathParameters: {
            source,
            identifier,
        },
        isBase64Encoded: true,
        body: bodyBase64,
    };
const response = await lambda.invoke({
        FunctionName: 'arn:aws:lambda:us-east-1:000000000000:function:uploadAvatar',
        InvocationType: 'RequestResponse',
        Payload: JSON.stringify(payload),
    }).promise();
```

**Note**: I also tried just using uploadAvatar for the function name.

Error Stack Trace returned by Localstack

```
InternalFailure: Error executing Lambda function: [Errno 7] Argument list too long Traceback (most recent call last):
    File "/opt/code/localstack/localstack/services/awslambda/lambda_api.py", line 301, in run_lambda
      event, context=context, version=version, asynchronous=asynchronous)
    File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 136, in execute
      result, log_output = self.run_lambda_executor(cmd, environment, asynchronous)
    File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 58, in run_lambda_executor
      process = run(cmd, asynchronous=True, stderr=subprocess.PIPE, outfile=subprocess.PIPE, env_vars=env_vars)
    File "/opt/code/localstack/localstack/utils/common.py", line 666, in run
      return do_run(cmd)
    File "/opt/code/localstack/localstack/utils/common.py", line 656, in do_run
      stderr=stderr, stdout=stdout_arg, env=env_dict, cwd=cwd)
    File "/opt/code/localstack/.venv/lib/python2.7/site-packages/subprocess32.py", line 825, in __init__
      restore_signals, start_new_session)
    File "/opt/code/localstack/.venv/lib/python2.7/site-packages/subprocess32.py", line 1574, in _execute_child
      raise child_exception_type(errno_num, err_msg)
  OSError: [Errno 7] Argument list too long
```

Localstack configuration environment variables:
```
SERVICES=lambda,sns,s3,ses,cloudformation,cloudwatch,apigateway
DEFAULT_REGION=us-east-1
HOSTNAME=cloud
HOSTNAME_EXTERNAL=cloud.dev.leaguegamer.org
LOCALSTACK_HOSTNAME=cloud
USE_SSL=false
LAMBDA_EXECUTOR=docker
DATA_DIR=/tmp/localstack/data
PORT_WEB_UI=8080
LAMBDA_DOCKER_NETWORK=leaguegamer_default
```

This is running using the `localstack/localstack` docker image
for env_name, env_value in env_vars_before.items():
            env_value_before = env_vars_before.get(env_name)
            os.environ[env_name] = env_value_before or ""
            if env_value_before is None:
                os.environ.pop(env_name, None)
    @classmethod
    def get_lambda_callable(cls, function: LambdaFunction, qualifier: str = None) -> Callable:
        """Returns the function Callable for invoking the given function locally"""
        qualifier = function.get_qualifier_version(qualifier)
        func_dict = cls.FUNCTION_CALLABLES.get(function.arn()) or {}
        
        callable = func_dict.get(qualifier) or func_dict.get(LambdaFunction.QUALIFIER_LATEST)
        if not callable:
            raise Exception(
                f"Unable to find callable for Lambda function {function.arn()} - {qualifier}"
            )
        return callable
    @classmethod
    def add_function_callable(cls, function: LambdaFunction, lambda_handler: Callable):
        """Sets the function Callable for invoking the $LATEST version of the Lambda function."""
        func_dict = cls.FUNCTION_CALLABLES.setdefault(function.arn(), {})
        qualifier = function.get_qualifier_version(LambdaFunction.QUALIFIER_LATEST)
        func_dict[qualifier] = lambda_handler
class Util:
    debug_java_port = False
    @classmethod
    def get_java_opts(cls):