
This change is the first step to support secure RBAC and allows usage of system scope credentials for Keystone API request. This change covers the following two items. - assignment of system scope roles to system user - credential parameters for authtoken middleware Depends-on: https://review.opendev.org/804325 Change-Id: I2a54b0d0c03a98b3fe7a3a4a28051247eea7e70a