* 6.4:
  [WebProfilerBundle] Fix tests
  [Cache] Tests for Redis Replication with cache
  [BrowserKit] Fix submitting forms with empty file fields
  [WebProfilerBundle] Fix interception for non conventional redirects
  [DependencyInjection] Do not preload functions
  [DependencyInjection] Fix cloned lazy services not sharing their dependencies when dumped with PhpDumper
  [HttpClient] Fix activity tracking leading to negative timeout errors
  [Security] Return null instead of empty username to fix deprecation notice
  [DependencyInjection] Fix env default processor with scalar node

* 6.4:
  fix integration tests
  Check for null parent Nodes in the case of orphaned branches

* 6.4:
  [Cache] Fix `PredisAdapter` tests