Can't use Laravel's built in DB Mock in a Codeception run

#### What are you trying to achieve?

Use Laravel's built in `DB` Mock in a Codeception run

_Note: This works in 2.2.9 but breaks in 2.2.10_

#### What do you get instead?

```bash
./vendor/bin/codecept run -f -d unit Traits/
Codeception PHP Testing Framework v2.2.10
Powered by PHPUnit 4.8.27 by Sebastian Bergmann and contributors.

Rebuilding UnitTester...

Unit Tests (7) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Modules: Laravel5, Asserts, \Helper\Unit, Mockery, Db
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
✔ DatabaseToolsUnitTest: Date_modify_works_for_postgres (0.06s)

[BadMethodCallException]
Method Mockery_0_Illuminate_Database_DatabaseManager::getConnections() does not exist on this mock object

Exception trace:
() at /Users/timbroder/workspace/kidfund/web/vendor/mockery/mockery/library/Mockery/Loader/EvalLoader.php(16) : eval()'d code:709
Mockery_0_Illuminate_Database_DatabaseManager->_mockery_handleMethodCall() at /Users/timbroder/workspace/kidfund/web/vendor/mockery/mockery/library/Mockery/Loader/EvalLoader.php(16) : eval()'d code:857
Mockery_0_Illuminate_Database_DatabaseManager->getConnections() at /Users/timbroder/workspace/kidfund/web/vendor/codeception/codeception/src/Codeception/Module/Laravel5.php:203
Codeception\Module\Laravel5->_after() at /Users/timbroder/workspace/kidfund/web/vendor/codeception/codeception/src/Codeception/Subscriber/Module.php:68
Codeception\Subscriber\Module->after() at n/a:n/a
call_user_func() at /Users/timbroder/workspace/kidfund/web/vendor/symfony/event-dispatcher/EventDispatcher.php:174
Symfony\Component\EventDispatcher\EventDispatcher->doDispatch() at /Users/timbroder/workspace/kidfund/web/vendor/symfony/event-dispatcher/EventDispatcher.php:43
Symfony\Component\EventDispatcher\EventDispatcher->dispatch() at /Users/timbroder/workspace/kidfund/web/vendor/codeception/codeception/src/Codeception/PHPUnit/Listener.php:126
Codeception\PHPUnit\Listener->fire() at /Users/timbroder/workspace/kidfund/web/vendor/codeception/codeception/src/Codeception/PHPUnit/Listener.php:112
Codeception\PHPUnit\Listener->endTest() at /Users/timbroder/workspace/kidfund/web/vendor/phpunit/phpunit/src/Framework/TestResult.php:340
PHPUnit_Framework_TestResult->endTest() at /Users/timbroder/workspace/kidfund/web/vendor/phpunit/phpunit/src/Framework/TestResult.php:733
PHPUnit_Framework_TestResult->run() at /Users/timbroder/workspace/kidfund/web/vendor/phpunit/phpunit/src/Framework/TestCase.php:724
PHPUnit_Framework_TestCase->run() at /Users/timbroder/workspace/kidfund/web/vendor/phpunit/phpunit/src/Framework/TestSuite.php:747
PHPUnit_Framework_TestSuite->run() at /Users/timbroder/workspace/kidfund/web/vendor/codeception/codeception/src/Codeception/PHPUnit/Runner.php:106
Codeception\PHPUnit\Runner->doEnhancedRun() at /Users/timbroder/workspace/kidfund/web/vendor/codeception/codeception/src/Codeception/SuiteManager.php:157
Codeception\SuiteManager->run() at /Users/timbroder/workspace/kidfund/web/vendor/codeception/codeception/src/Codeception/Codecept.php:184
Codeception\Codecept->runSuite() at /Users/timbroder/workspace/kidfund/web/vendor/codeception/codeception/src/Codeception/Codecept.php:153
Codeception\Codecept->run() at /Users/timbroder/workspace/kidfund/web/vendor/codeception/codeception/src/Codeception/Command/Run.php:288
Codeception\Command\Run->execute() at /Users/timbroder/workspace/kidfund/web/vendor/symfony/console/Command/Command.php:259
Symfony\Component\Console\Command\Command->run() at /Users/timbroder/workspace/kidfund/web/vendor/symfony/console/Application.php:847
Symfony\Component\Console\Application->doRunCommand() at /Users/timbroder/workspace/kidfund/web/vendor/symfony/console/Application.php:192
Symfony\Component\Console\Application->doRun() at /Users/timbroder/workspace/kidfund/web/vendor/symfony/console/Application.php:123
Symfony\Component\Console\Application->run() at /Users/timbroder/workspace/kidfund/web/vendor/codeception/codeception/src/Codeception/Application.php:103
Codeception\Application->run() at /Users/timbroder/workspace/kidfund/web/vendor/codeception/codeception/codecept:36
```
> Provide test source code if related

```php
/**
* @test
*/
public function date_modify_works_for_postgres()
{
DB::shouldReceive('getDriverName')
->once()
->andReturn('pgsql');

$return = $this->dateModify('field_name', '10', '-', 'month');

$this->assertEquals("field_name - INTERVAL '10' month", $return);
}
```
### Details

* Codeception version: 2.2.10
* PHP Version: 2.3.5
* Operating System: OSX 10.12.6
* Installation type: Composer
* List of installed packages [gist](https://gist.githubusercontent.com/timbroder/c1228c77713d87509a74b69f94f0de68/raw/d2ef8a716e35be4082dd727ad79be21e9959c045/gistfile1.txt "gist")
* Suite configuration: Using Codeceptions tests