Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Add triggers to verify Functest"
  - Add triggers to verify Functest

    It runs testcases for all new patchset.

    Change-Id: Ida99e2f40cf3a7a6bc002e81cee27eb67ea62ff0
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 1974788..1569d33 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 1974788bffc8469b9f05b5506e6e1e90fd2661a3
+Subproject commit 1569d338abfadc2a851e7f842c3fcc22e2d7998d