Update git submodules

* Update docs/submodules/releng from branch 'master'
  - [Functest] Add docker run command to execute the tests

    Change-Id: Ie9a56a7786de841d720b9902e8d3b5aabd79dd7e
    Signed-off-by: jose.lausuch <jose.lausuch@ericsson.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 1633236..29b23b5 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 16332362c6b87c391018d08fe20fc9eee7bd5a0a
+Subproject commit 29b23b5a78b919b88545bc1afed772963a6c66d9