Update git submodules

* Update docs/submodules/releng from branch 'master'
  to ffd5e01a7293fd09f7042254eb5533fd0d186329
  - Merge "Stop leveraing devuser"
  - Stop leveraing devuser

    Change-Id: Ie72e5f5b7819c56e092cad4c6218142e8c627071
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 9a7b3fa..ffd5e01 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 9a7b3fa13b257d0041b15d3b2c6657d2eaeb71cb
+Subproject commit ffd5e01a7293fd09f7042254eb5533fd0d186329