Update / rewrite the RBAC role descriptions for stage.

Edit and rewrite RBAC role descriptions using  Guidelines for writing RBAC role descriptions  

The RBAC role descriptions that appear on HCC > Settings > User Access > Roles page.

The descriptions are pulled from the code and presented in the document, User Access Configuration Guide for Role-based Access Control. 

This effort ties to the Hybrid Cloud Console Strategy 2024 proposals. (Reference: Slide 3 of HCC UXD demo for March 5 2024   )