Laravel module project root relative configuration

Such patch usable when we use codeception under module and also have base config to understand what task should be run.

### Example when patch usable:

> src 
> ---Api
> ------Services
> ------tests
> ------codeception.yml
> ---AnotherModule
> ------Services
> ------tests
> ------codeception.yml
> codeception.yml

Run from command line 
> vendor/codeception/codeception/codecept run 

Get error 

> Uncaught exception 'ErrorException' with message 'require(/projectroot/src/API/vendor/autoload.php): failed  to open stream: No such file or directory' in /projectroot/vendor/codeception/codeception/src/Codeception/Module/Laravel4.php:73