difference between KeystoneServiceAdmin and Admin role
In my opinion, the Admin role can access to all operations of Keystone, while what the KeystoneServiceAdmin role can access is just a subset of the Admin role. Am I right? If so, why the first user created in Keystone(aka admin) should be assigned both the Admin and KeystoneServiceAdmin role? Isn't that redundant? If not, what the KeystoneServiceAdmin is used for?