Allow more configuration for all components

[JeffreyDevloo]

Feature description

We are currently having to reconfigure proxies/volumes manually on the Nuvolat environment. The framework should allow more configuration options for all components.

Configurations that should happen:

• Reconfigure volumedrivers through the gui: disabling both caches on the proxy configs and schedule their restarts https://github.com/openvstorage/framework/issues/1331 https://github.com/openvstorage/framework/issues/1656
• Reconfigure proxies on a volumedriver level (more advanced params like manifest caches etc) https://github.com/openvstorage/framework-alba-plugin/issues/453
• Volume write buffer should allow the choice of sco-tlog ratio and non-disposable sco factor https://github.com/openvstorage/framework/issues/1687
• Fragment size of a preset should be exposed through the GUI https://github.com/openvstorage/framework/issues/1648

edit: EPIC: parent of https://github.com/openvstorage/framework/issues/1331 parent of https://github.com/openvstorage/framework/issues/1656 parent of https://github.com/openvstorage/framework-alba-plugin/issues/453 parent of https://github.com/openvstorage/framework/issues/1687 parent of https://github.com/openvstorage/framework/issues/1648