Buildify all the build files

We are slowly upgrading them all.  Bite bullet and do the rest of them.

Change-Id: I15744cf1b0dc1954954e131b35228c98247c92fe
diff --git a/debian/six.BUILD b/debian/six.BUILD
index 87cd318..3d8ffd4 100644
--- a/debian/six.BUILD
+++ b/debian/six.BUILD
@@ -1,7 +1,7 @@
 py_library(
-  name = 'six',
-  visibility = ['//visibility:public'],
-  srcs = [
-    'six.py',
-  ],
+    name = "six",
+    srcs = [
+        "six.py",
+    ],
+    visibility = ["//visibility:public"],
 )