minor symfony#38045 [FrameworkBundle] relax some test assertions (xabbuh)

This PR was merged into the 4.4 branch.

Discussion
----------

[FrameworkBundle] relax some test assertions

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Tickets       |
| License       | MIT
| Doc PR        |

Commits
-------

473e293 relax some test assertions

Author: xabbuh

src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php

@@ -1459,16 +1459,20 @@ public function testCachePoolServices()
 
         $this->assertSame(ChainAdapter::class, $chain->getClass());
 
+        $this->assertCount(2, $chain->getArguments());
+        $this->assertCount(3, $chain->getArguments()[0]);
+
+        $expectedSeed = $chain->getArgument(0)[1]->getArgument(0);
         $expected = [
             [
                 (new ChildDefinition('cache.adapter.array'))
                     ->replaceArgument(0, 12),
                 (new ChildDefinition('cache.adapter.filesystem'))
-                    ->replaceArgument(0, 'xctxZ1lyiH')
+                    ->replaceArgument(0, $expectedSeed)
                     ->replaceArgument(1, 12),
                 (new ChildDefinition('cache.adapter.redis'))
                     ->replaceArgument(0, new Reference('.cache_connection.kYdiLgf'))
-                    ->replaceArgument(1, 'xctxZ1lyiH')
+                    ->replaceArgument(1, $expectedSeed)
                     ->replaceArgument(2, 12),
             ],
             12,