[WIP] Integration tests via symfony

A first attempt towards running integration tests on symfony.
In practice SetupFactory now behaves more like WebTestCase:
https://github.com/symfony/symfony/blob/2.3/src/Symfony/Bundle/FrameworkBundle/Test/WebTestCase.php#L46

This requries https://github.com/ezsystems/ezpublish-community/pull/146

How to run:
```
$ php55 bin/phpunit -c vendor/ezsystems/ezpublish-kernel/phpunit-integration-legacy.xml --stop-on-failure
```

This will not pass, locally or on travis, but at this point it no longer
complains about symfony related things like missing request*, current failure:

```
PHPUnit 3.7.37 by Sebastian Bergmann.

Configuration read from /Users/andrerom/Sites/www/ezpublish/vendor/ezsystems/ezpublish-kernel/phpunit-integration-legacy.xml

E

Time: 1.77 seconds, Memory: 49.50Mb

There was 1 error:

1) eZ\Publish\API\Repository\Tests\Values\User\Limitation\ContentTypeLimitationTest::testContentTypeLimitationAllow
eZ\Publish\Core\Base\Exceptions\BadStateException: Argument '$versionInfo' has a bad state: Only versions in draft status can be published.

/Users/andrerom/Sites/www/ezpublish/vendor/ezsystems/ezpublish-kernel/eZ/Publish/Core/Repository/ContentService.php:1528
/Users/andrerom/Sites/www/ezpublish/vendor/ezsystems/ezpublish-kernel/eZ/Publish/Core/Repository/ContentService.php:1502
/Users/andrerom/Sites/www/ezpublish/vendor/ezsystems/ezpublish-kernel/eZ/Publish/Core/SignalSlot/ContentService.php:416
/Users/andrerom/Sites/www/ezpublish/vendor/ezsystems/ezpublish-kernel/eZ/Publish/API/Repository/Tests/Values/User/Limitation/BaseLimitationTest.php:36
/Users/andrerom/Sites/www/ezpublish/vendor/ezsystems/ezpublish-kernel/eZ/Publish/API/Repository/Tests/Values/User/Limitation/ContentTypeLimitationTest.php:72

FAILURES!
Tests: 1, Assertions: 0, Errors: 1.
```

If it is executed without --stop-on-failure it will result in:
```
EFFE...E.E.EFE.....EF......EFE....SSSSSSSSSSSSSESSSSSSSSSSSFF   61 / 1028 (  5%)
EE.SEEEESSSESSESSSSSSSSESSSSSSSSSSSEEEEEEESE.....SSSSSSSSSSSS  122 / 1028 ( 11%)
SESSSSSSSSSSSFFEE.SE...SSSSSSSSSSSSSESSSSSSSSSSSFFFFFFFFEE.SE  183 / 1028 ( 17%)
..SSSSSSSSSSSSSESSSSSSSSSSSFEE.SE..SSSSSSSSSSSSSESSSSSSSSSSSF  244 / 1028 ( 23%)
FEE.SSE....SSSSSSSSSSSSSESSSSSSSSSSSFFFFFFFFFFFFEE.SE....SSSPHP Fatal error:  Allowed memory size of 268435456 bytes exhausted (tried to allocate 1807 bytes) in /Users/andrerom/Sites/www/ezpublish/vendor/monolog/monolog/src/Monolog/Formatter/LineFormatter.php on line 111
```

/* That went away by getting the test client and setting empty arguments.