Client Authentication Instructions

There should be paired instructions for setting up authentication methods as an operator, and how to use those authentication methods as a user.

For example:

operator/auth.md#x509_proxy

There is some way to set up proxy and cert things that I am only vaguely aware but these are the things to change: 

1. Thing A 
2. Thing B


To view an example of this login method, please view [the user documentation](user/auth.md#x509-proxy)

user/auth.md#x509-proxy

To use x509 use the `--auth-type x509` flag while using the CLI or `auth_type="x509"` in the python client. 

An example can be seen below: 

[some python code]

This should also include some common failure modes in a FAQ style list