Update git submodules

* Update docs/submodules/releng from branch 'master'
  - this script is called by jenkins user

    we need to sudo the mkdir

    Change-Id: I4db726e92566917ecd384884cf1a3c60354c2065
    Signed-off-by: agardner <agardner@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index c0267d2..a7f82c0 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit c0267d24edaae27ae5aea685c3fe6df973a578f7
+Subproject commit a7f82c093fab2ad19c7ffb0a81ec5756e91e73ae