New minio policy for users; new keycloak group kaapana_user; minio policies in...
Changes
- Add custom minio policy for restricted access to buckets
- Use keycloak groups to assign roles and attributes to users
- Adjust group:all_data with role:admin and role:user and attribute:policy->consoleAdmin
- Introduce group:kaapana_user with role:user and attribute:policy->kaapanaUser
- Allow role:user to access dcm4chee and thumbnails