Fixed integration setup

[ViniTou]

🎫 Issue	IBX-XXXXX

Description:

Trying to run integration tests in unit test setup results in

        if (!isset($_SERVER['KERNEL_CLASS']) && !isset($_ENV['KERNEL_CLASS'])) {
            throw new \LogicException(\sprintf('You must set the KERNEL_CLASS environment variable to the fully-qualified class name of your Kernel in phpunit.xml / phpunit.xml.dist or override the "%1$s::createKernel()" or "%1$s::getKernelClass()" method.', static::class));
        }

For QA:

Documentation:

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud