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
% (return_code, result, log_output),
                log_output,
                result,
            )
        invocation_result = InvocationResult(result, log_output=log_output)
        return invocation_result
    def _execute(
        self, lambda_function: LambdaFunction, inv_context: InvocationContext
    ) -> InvocationResult:
        
        result = self.apply_plugin_patches(inv_context)
        if isinstance(result, InvocationResult):
            return result
        lambda_cwd = lambda_function.cwd
        environment = self._prepare_environment(lambda_function)
        environment["LOCALSTACK_HOSTNAME"] = config.LOCALSTACK_HOSTNAME
        environment["EDGE_PORT"] = str(config.EDGE_PORT)
        if lambda_function.timeout:
            environment["AWS_LAMBDA_FUNCTION_TIMEOUT"] = str(lambda_function.timeout)
        context = inv_context.context
        if context:
            environment["AWS_LAMBDA_FUNCTION_NAME"] = context.function_name
            environment["AWS_LAMBDA_FUNCTION_VERSION"] = context.function_version
            environment["AWS_LAMBDA_FUNCTION_INVOKED_ARN"] = context.invoked_function_arn
            environment["AWS_LAMBDA_FUNCTION_MEMORY_SIZE"] = str(context.memory_limit_in_mb)
        
        lambda_function_callable = self.get_lambda_callable(
            lambda_function, qualifier=inv_context.function_version
        )
        def do_execute(q):