Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 1d7670113b39093c1a955672d4a6811e088e449e
  - Debug

    Change-Id: I20fd8c2ccae400ae069605d8a5187fbb6dd670a5
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 3386a87..1d76701 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 3386a8752a76281226c94f26afc61e83f0f483b8
+Subproject commit 1d7670113b39093c1a955672d4a6811e088e449e