Migrate from `norman` to `steve` auth configuration and actions

[richard-cox]

Use new steve equivalents (including steve versions of public api endpoints) of norman endpoints

This includes

• management of auth providers
• all log in processes
  • includes session token
• all log out processes

Some (not all) endpoints affected

• v3-public/authproviders (and their login actions)
• v3/authconfigs
• v3/tokens action logout

Required to move away from norman tokens (SURE-6548)

[richard-cox]

Blocked on rancher/rancher#47865, rancher/rancher#47033

[richard-cox]

Moved to 2.13 given dependent issue