Update git submodules

* Update docs/submodules/moon from branch 'master'
  - Added a license metadata line to specify Apache-2.0

    Change-Id: Ib37b90992ab37abd19774d1348670dea7cc29bf2
    Signed-off-by: rpaik <rpaik@linuxfoundation.org>

diff --git a/docs/submodules/moon b/docs/submodules/moon
index 16f0175..afbc4aa 160000 (submodule)
--- a/docs/submodules/moon
+++ b/docs/submodules/moon
@@ -1 +1 @@
-Subproject commit 16f0175839e4bf5023d34d272182666f86f255cf
+Subproject commit afbc4aa793b9457651523373b91358679fc1858c