bug #18618 [HttpKernel] tweaked redirection profiling in RequestDataCollector (HeahDude)

This PR was merged into the 3.1-dev branch.

Discussion
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[HttpKernel] tweaked redirection profiling in RequestDataCollector

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

- c8ba3b2 removes duplicated code forgotten in #17589

- a47d2e8 fixes the collecting of redirect data in first sub request instead of redirected master request.

Commits
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df19c14 use a request attribute flag for redirection profile
b26cb6d [HttpKernel] added RequestDataCollector::onKernelResponse()
c8ba3b2 [HttpKernel] remove legacy duplicated code

Author: fabpot

CHANGELOG.md

@@ -7,6 +7,7 @@ CHANGELOG
  * Added `Controller::json` to simplify creating JSON responses when using the Serializer component
  * Deprecated absolute template paths support in the template name parser
  * Deprecated using core form types without dependencies as services
+ * Added `Symfony\Component\HttpHernel\DataCollector\RequestDataCollector::onKernelResponse()`
  * Added `Symfony\Bundle\FrameworkBundle\DataCollector\RequestDataCollector`
  * Deprecated service `serializer.mapping.cache.apc` (use `serializer.mapping.cache.doctrine.apc` instead)