Update git submodules

* Update docs/submodules/releng from branch 'master'
  to e83d164327f1f499537912113b0d5aded0d7c513
  - Run Functest Benchmarking testcases sequentially

    Change-Id: I9c263d4178f1ea829d5d3229b495e57df29f6b7a
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 6b7dbd4..e83d164 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 6b7dbd409be1181f6710935a3b8afc192900856d
+Subproject commit e83d164327f1f499537912113b0d5aded0d7c513