…able (mpdude)This PR was squashed before being merged into the 6.2 branch.Discussion----------[FrameworkBundle] Make the Router `cache_dir` configurable| Q             | A| ------------- | ---| Branch?       | 6.2 for features| Bug fix?      | no| New feature?  | yes| Deprecations? | no| Tickets       || License       | MIT| Doc PR        |symfony/symfony-docs#17253This PR adds a new `framework.router.cache_dir` configuration setting. It will default to `kernel.cache_dir` as previously, but makes it possible to easily re-configure the Router's cache directory.My intended use case is to set it to `~` (`null`) for the `test` environment because I need to modify or otherwise dynamically load routes during tests. Another use case I see for it is to have tenant-specific route configurations and caches in multi-tenancy applications.Commits-------dd65d30 [FrameworkBundle] Make the Router `cache_dir` configurable