Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 9cb07a80b34886be30fac3785e97b06a486278c7
  - Merge "Don't build mts if not latest"
  - Don't build mts if not latest

    Change-Id: I2032dea23192a40aef5d51f91bdc5f91d02cfc55
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index a25cdc0..9cb07a8 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit a25cdc079c6729dd14c107a1f1b8634d66ec8e1b
+Subproject commit 9cb07a80b34886be30fac3785e97b06a486278c7