Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Fraser jobs for securedlab verification"
  - Fraser jobs for securedlab verification

    Change-Id: I99c3b9413fcdc103fec246ff6c8c4f2951878000
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index f273443..2913820 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit f273443f52fc378a46a62b46a4985dc4ae9ed5d5
+Subproject commit 2913820a65ed1201c616c188a1af99eb53a9994c