[2.3][Enhancement][WIP] Cachebundle

Bootstrap the cache bundle based on the [LiipDoctrineCacheBundle](https://github.com/liip/LiipDoctrineCacheBundle) with the help of @lsmith77

This is the second part required for #1513 with the [CacheComponent](https://github.com/symfony/symfony/pull/3211)

Todo:

* Add functionalities,
* Add tests,
* Make use of the cache component (under development),
* Modify other Bundles to leverage this bundle,
* Write docs

Pull Requests / feedback / comments welcomed !