[FEATURE]: Configurable Volume Attributes use recommended naming convention <prefix>/<name>

[AkshaySainiDell]

Describe the solution you'd like
It is recommended that labels of the same domain share the same prefix to avoid collision : https://kubernetes.io/docs/concepts/overview/working-with-objects/common-labels/

For example, the label we take as input is description (and can be already used) a better name is : csi.dell.com/description

The prefix must be a DNS-compatible name (only alphabetical characters (A-Z), numeric characters (0-9), the minus sign , and the period (.)) and 63 character longs.

Please consider updating the labels here with a prefix : https://dell.github.io/csm-docs/docs/csidriver/features/powerstore/#configurable-volume-attributes-optional:~:text=PowerStore%20CSI%20driver%3A-,Block%20Volume,-NFS%20Volume