[Logger] Do not enforce the file and enable/disable logging on the fly

[JeffreyDevloo]

The Framework current logging sets up a filehandler for every logger instantiated. This is just plain wrong. It enforces:

• The file to be preset (which is created as root 99% of the times)
• A new FileHandler (you cannot chose which file to use)
• Not using the default logger inheritance as every logger is on the same level

We should migrate to a logger system where all entrance points configure the root logger and any other possible loggers themselves.

[JeffreyDevloo]

Fixed by https://github.com/openvstorage/framework/pull/2251