Roles endpoint defects #8
Description
compared with v3 java code, the following are missing for roles endpoint:
1, get roles, and get role by id, should check auth user is machine or not and check scope if it's machine;
2, get roles, should return specified fields according to selector parameter;
3, assign role, and deassign role should call dao.checkRole as in the java code, see https://github.com/appirio-tech/identity-service/blob/bf2428ea6997e115b317eb419c5e2c1c6029cdf5/src/main/java/com/appirio/tech/core/service/identity/resource/RoleResource.java#L429;
4, hasRole, the logic should call dao.checkRole;
5, should we return role or role id from assigning or deassign role?