[REQ] [SPRING-CLOUD] Register OAuth2ClientContext as Bean

Created by: MelleD

Is your feature request related to a problem? Please describe.

In some situations, Feign has to retry to get a token. You can only do this if OAuth2ClientContext is registered as a bean. See issue for more details: https://github.com/OpenFeign/feign/issues/1100

Describe the solution you'd like

Register OAuth2ClientContext as Bean