Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 9ced874a97937ca6c0d7c34d9a9c0418652c3dd2
  - Fix dashboard url

    Change-Id: I0bc6a230c34390c9ab059cfc938b2846af6fe536
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 1ca4c8d..9ced874 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 1ca4c8d49f18c9b31269434f895b2a4c6c643a7a
+Subproject commit 9ced874a97937ca6c0d7c34d9a9c0418652c3dd2