fix cli client registration (#825)

- The CLIClient approle was not assigned to the cli registration created byt he registration.py script

src/cli/onefuzz/api.py

@@ -1572,10 +1572,14 @@ class Onefuzz:
         client_secret: Optional[str] = None,
         enable_feature: Optional[PreviewFeature] = None,
         tenant_domain: Optional[str] = None,
+        reset: Optional[bool] = None,
     ) -> BackendConfig:
         """Configure onefuzz CLI"""
         self.logger.debug("set config")
 
+        if reset:
+            self._backend.config = BackendConfig(authority="", client_id="")
+
         if endpoint is not None:
             # The normal path for calling the API always uses the oauth2 workflow,
             # which the devicelogin can take upwards of 15 minutes to fail in