Update git submodules

* Update docs/submodules/moon from branch 'master'
  - Add policy.json examples

    Change-Id: I862ea10f8e83a0d577f60687835703078b6b4bc9

diff --git a/docs/submodules/moon b/docs/submodules/moon
index 2cc4396..0031ddc 160000 (submodule)
--- a/docs/submodules/moon
+++ b/docs/submodules/moon
@@ -1 +1 @@
-Subproject commit 2cc4396c9409b88324b12238e15711701d170352
+Subproject commit 0031ddcc958c6124c4391b52a3fb0ab16677f52d