minor symfony#10691 [Config] Fix NodeBuilderTest::testNumericNodeCreation. (idn2104)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes symfony#10691).

Discussion
----------

[Config] Fix NodeBuilderTest::testNumericNodeCreation.

[Config] Fixes a test failure, under both php and hhvm.

```
PHP Fatal error:  Class 'Symfony\Component\Config\Tests\Definition\Builder\NodeBuilder' not found in /home/d/dev-fork/symfony-fork/src/Symfony/Component/Config/Tests/Definition/Builder/NodeBuilderTest.php on line 82
```

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | N/A
| License       | MIT
| Doc PR        | N/A

Commits
-------

022c4af [Config] Fix NodeBuilderTest::testNumericNodeCreation to use BaseNodeBuilder alias.

Author: fabpot

src/Symfony/Component/Config/Tests/Definition/Builder/NodeBuilderTest.php

@@ -79,7 +79,7 @@ public function testNodeTypesAreNotCaseSensitive()
 
     public function testNumericNodeCreation()
     {
-        $builder = new NodeBuilder();
+        $builder = new BaseNodeBuilder();
 
         $node = $builder->integerNode('foo')->min(3)->max(5);
         $this->assertInstanceOf('Symfony\Component\Config\Definition\Builder\IntegerNodeDefinition', $node);