Once files moved to aos folder and files updated accordingly

Change-Id: Idd26fca1d4dc15407e92859400e1a15a8a142ec3
diff --git a/aos/testing/BUILD b/aos/testing/BUILD
index a8dce04..4f2fc83 100644
--- a/aos/testing/BUILD
+++ b/aos/testing/BUILD
@@ -22,7 +22,7 @@
   deps = [
     ':googletest',
     '//aos/common/logging:implementations',
-    '//aos/common:once',
+    '//aos:once',
     '//aos/common:mutex',
   ],
   testonly = True,