UserManagement: Over all Analysis and Design of User Mgmt

[rajat-soda]

Issue/Feature Description:
This Issue tracks the Analysis and Design of Overall User Management encompassing all the components of SODA [Including Defin , Catalog Services, Backend Secret Services etc.]

Why this issue to fixed / feature is needed(give scenarios or use cases):
To provide robust, user and identity management for SODA.

How to reproduce, in case of a bug:

Other Notes / Environment Information: (Please give the env information, log link or any useful information for this issue)
https://docs.google.com/document/d/1AStnHyht46BsISaxeIBsLiV7IBQYLL1tNyLskzOKNqM/edit

[rajat-soda]

• Subtask
• Create User Management Analysis doc specific to Yahoo Japan Requirements.
• Derived from : https://docs.google.com/document/d/1AStnHyht46BsISaxeIBsLiV7IBQYLL1tNyLskzOKNqM/edit