Update git submodules

* Update docs/submodules/moon from branch 'master'
  - Add Moon stub for the tempest and patrole tests.

    Change-Id: Icb3cc72f69636b3a99a3c7c19be3c4e407cb24dc

diff --git a/docs/submodules/moon b/docs/submodules/moon
index dbd38cc..9a2e672 160000 (submodule)
--- a/docs/submodules/moon
+++ b/docs/submodules/moon
@@ -1 +1 @@
-Subproject commit dbd38cc0f28257772580d42905d2d398fc1d1705
+Subproject commit 9a2e6721376547244e53dbb92ea596f526a9c865