Update git submodules

* Update docs/submodules/releng from branch 'master'
  to b30c0d5f9c2983d86660018bbcb59ac955126a3b
  - Debug

    Change-Id: Ib4cbc793a533290c6ca4adf8f17b6d357627a64b
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 57f3d24..b30c0d5 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 57f3d24cccec0e15251ed9c8709f225fa5089072
+Subproject commit b30c0d5f9c2983d86660018bbcb59ac955126a3b