Merge branch '4.4' into 5.2

* 4.4:
  [HttpKernel] do is_file check before include
  [PhpUnitBridge] fix reporting deprecations from DebugClassLoader
  [FrameworkBundle] skip deprecation in integration tests

Author: nicolas-grekas

Tests/Functional/app/CachePools/bundles.php

@@ -14,5 +14,4 @@
 
 return [
     new FrameworkBundle(),
-    new TestBundle(),
 ];