* Use go-micro store to cache the roles
Add custom in-memory implementation
* replace redis with custom etcd implementation
* adjust table name for the cache in the roles manager
* Fix tests
* Fix sonarcloud issues
* Refactor for sonarcloud
* Allow configuration of cache per service
* Reuse parent context in etcd implementation
This we use reva to mint tokes for users when using the CS3 backend
(https://github.com/owncloud/ocis/pull/2528) the user's roles are no
longer part of the token.
This adds a workaround to the RequireSelfOrAdmin middleware to Request
the user's role id on demand from the settings service.
Partial Fix for #2646
