Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 5c1de065add30cd38c3bdfe0805b7778b2c356cb
  - Remove neutron_trunk from all Hunter jobs

    It was already excluded in all JJB projects.

    Change-Id: I4f74dc65d011903cc8093071c01315a954e1438a
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 39ebf17..5c1de06 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 39ebf17bec845d67d36e421247ab3b82bea78301
+Subproject commit 5c1de065add30cd38c3bdfe0805b7778b2c356cb