Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 2ed8a02d2e7ff3dd122a14b60530fdc7f6378ed9
  - Add releng-scm in jjb verify

    Change-Id: Ie75e792d379004aba0200fb02e81418b86ee7214
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 2ffba4a..2ed8a02 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 2ffba4a0e2ae6f7b8f99909e6d9149cfdda2a3bc
+Subproject commit 2ed8a02d2e7ff3dd122a14b60530fdc7f6378ed9