[BrowserKit] Pass headers when `followRedirect()` is called
[Security] fixed some phpdoc
merged branch stloyd/bugfix/issue7929 (PR #8697)

This PR was merged into the 2.2 branch.

Discussion
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[2.2] [BrowserKit] Pass headers when `followRedirect()` is called

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Tests pass?   | yes
| Fixed tickets | #7929
| License       | MIT

Commits
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0d07af8 [BrowserKit] Pass headers when `followRedirect()` is called