replaced individual services with service manager in auth, user and role server

controller/controller.go

controller/northbound/server/auth.go

controller/northbound/server/auth_interceptor.go

controller/northbound/server/auth_interceptor_test.go

controller/northbound/server/auth_test.go

controller/northbound/server/nbi.go

controller/northbound/server/role.go

controller/northbound/server/role_test.go

controller/northbound/server/test_util_test.go

controller/northbound/server/user.go

controller/northbound/server/user_test.go