Merge branch '4.4'

* 4.4: (23 commits)
  [HttpFoundation] fix docblock
  [HttpKernel] Flatten "exception" controller argument if not typed
  Fix MySQL column type definition.
  Link the right file depending on the new version
  [Cache] Redis Tag Aware warn on wrong eviction policy
  [HttpClient] fix HttpClientDataCollector
  [HttpKernel] collect bundle classes, not paths
  [Config] fix id-generation for GlobResource
  [HttpKernel] dont check cache freshness more than once per process
  [Finder] Allow ssh2 stream wrapper for sftp
  [FrameworkBundle] fix wiring of httplug client
  add FrameworkBundle requirement
  [SecurityBundle] add tests with empty authenticator
  [Security] always check the token on non-lazy firewalls
  [DI] Use reproducible entropy to generate env placeholders
  [WebProfilerBundle] Require symfony/twig-bundle
  [Mailer] Add UPGRADE entry about the null transport DSN
  bumped Symfony version to 4.3.9
  updated VERSION for 4.3.8
  updated CHANGELOG for 4.3.8
  ...

Author: nicolas-grekas

Resources/config/http_client.xml

@@ -26,8 +26,8 @@
 
         <service id="Http\Client\HttpClient" class="Symfony\Component\HttpClient\HttplugClient">
             <argument type="service" id="http_client" />
-            <argument type="service" id="Http\Message\ResponseFactory" on-invalid="ignore" />
-            <argument type="service" id="Http\Message\StreamFactory" on-invalid="ignore" />
+            <argument type="service" id="Psr\Http\Message\ResponseFactoryInterface" on-invalid="ignore" />
+            <argument type="service" id="Psr\Http\Message\StreamFactoryInterface" on-invalid="ignore" />
         </service>
     </services>
 </container>