[FrameworkBundle] Update redirection status

IMO, we should use the ``301`` status code in redirection as a default value instead of ``302`` status, since it's ``SEO`` friendly (302 is not) and because most of the web redirection are ``permanent`` and not ``temporarily``. In this case the user can chose  to use a ``302`` status for ``temporarily`` redirection if he want.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | NA
| License       | MIT
| Doc PR        | NA