Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "mcelog not longer supported on ubuntu 18.04"
  - mcelog not longer supported on ubuntu 18.04

    I belive that barometer needs mce log and will need to find another way
    of using it.

    https://bugs.launchpad.net/ubuntu/+source/mcelog/+bug/1752251

    Change-Id: I798f3052710a276c49d562b61661c2edf719d88b
    Signed-off-by: Aric Gardner <agardner@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index fde3876..16e9907 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit fde38761ec1309f348c02693da938ea0e724e76a
+Subproject commit 16e9907a18c28aeffedc4dd047b0727dd0c1066e