Update git submodules

* Update docs/submodules/releng from branch 'master'
  to d690ac4926c91c207740de3c91823fd5139f05e8
  - Accept license automatically

    Change-Id: I58692378f62f022a81a05aa7bd3dfc334c95f7eb
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 48b4159..d690ac4 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 48b415952f08b7b4f0f1524bb2de8b606d533e71
+Subproject commit d690ac4926c91c207740de3c91823fd5139f05e8