Fix undefined class Process in ExampleTest.php

[LunashaGit]

Process was undefined because it was not imported.

    try {
        retry(12, function () {
            // Wait until port 8100 is open
            dump('Waiting for port 8100 to open...');
            $fp = @fsockopen('localhost', 8100, $errno, $errstr, 1);
            if ($fp === false) {
                throw new Exception('Port 8100 is not open yet');
            }
        }, 5000);
    } catch (Exception $e) {
        Process::run('pkill -9 -P '.$process->id()); //Undefined
        throw $e;
    }
    Process::run('pkill -9 -P '.$process->id()); //Undefined

But used here :

    $process = \Illuminate\Support\Facades\Process::path(base_path())

[simonhamp]

Thanks!