Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 526acf929e95f4775a47c58317207328b8ec5ff0
  - Gate Functest and then CNTT RC vs OVN

    It allows verifying Functest Jerma vs OVN.
    It's directly linked to RC verification.

    Once it passes sucessfully, an new Hunter SUT may be setup too.

    Change-Id: I1d7fc55547eb2b961c42df15463689f5b0993f79
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index c2a94c8..526acf9 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit c2a94c860717f7d57e8f17fab12aac4b05d65356
+Subproject commit 526acf929e95f4775a47c58317207328b8ec5ff0