correctly set the team number for tests

Without this, it's going to pick some random team number on some
computers and fail on others (depending on the network configuration).

Change-Id: I182ed50299170de737812eadee68ff418e6518e6
diff --git a/aos/common/controls/control_loop_test.cc b/aos/common/controls/control_loop_test.cc
index 899b96b..40357b2 100644
--- a/aos/common/controls/control_loop_test.cc
+++ b/aos/common/controls/control_loop_test.cc
@@ -32,7 +32,7 @@
 
     new_state->enabled = enabled;
     new_state->autonomous = false;
-    new_state->team_id = 971;
+    new_state->team_id = team_id_;
 
     new_state.Send();
   }