Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "missing sudo for ansible install"
  - missing sudo for ansible install

    Change-Id: I6d7ab7746c75a8d33a27de3bf534b02cbc87e8ae
    Signed-off-by: agardner <agardner@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 828f1a4..a40c40f 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 828f1a47f85e3b291e0c3e26369cc3434c9c51d5
+Subproject commit a40c40f9c8cb37a255400aad96955150499f5964