Update git submodules

* Update docs/submodules/releng from branch 'master'
  - functest: Fix parameters for docker build jobs

    Change-Id: Id692673fbd47ba623d52970327dbc6360843b253
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index d888c77..5bf9ad7 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit d888c77724fde742f453fa1c6a93c977237199c5
+Subproject commit 5bf9ad7a7bfc260cf02531071a8af4b23f75bdf0