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/aos/events/glib_main_loop_test.cc b/aos/events/glib_main_loop_test.cc
index b857b0b..9f72e54 100644
--- a/aos/events/glib_main_loop_test.cc
+++ b/aos/events/glib_main_loop_test.cc
@@ -15,7 +15,7 @@
 
 const FlatbufferDetachedBuffer<Configuration> &Config() {
   static const FlatbufferDetachedBuffer<Configuration> result =
-      configuration::ReadConfig(ArtifactPath("aos/events/config.json"));
+      configuration::ReadConfig(ArtifactPath("aos/events/aos_config.json"));
   return result;
 }