Add auto retry logic for auth expiry separate from normal failure retry

lib/google/api_client/errors.rb

@@ -43,6 +43,11 @@ module Google
     class ClientError < TransmissionError
     end
 
+    ##
+    # A 401 HTTP error occurred.
+    class AuthorizationError < ClientError
+    end
+
     ##
     # A 5xx class HTTP error occurred.
     class ServerError < TransmissionError