Rename config.json to aos_config.json

Plenty of other things are called config.json, so let's pick a more
unique name.

Change-Id: I6510a172ec62674dd1b11bd71cef9aac2480c612
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/frc971/codelab/basic_test.cc b/frc971/codelab/basic_test.cc
index dc80988..6f8e6cc 100644
--- a/frc971/codelab/basic_test.cc
+++ b/frc971/codelab/basic_test.cc
@@ -93,7 +93,7 @@
  public:
   BasicControlLoopTest()
       : ::frc971::testing::ControlLoopTest(
-            aos::configuration::ReadConfig("frc971/codelab/config.json"),
+            aos::configuration::ReadConfig("frc971/codelab/aos_config.json"),
             chrono::microseconds(5050)),
         test_event_loop_(MakeEventLoop("test")),
         goal_sender_(test_event_loop_->MakeSender<Goal>("/codelab")),