Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 368adda8beebcf81166a1a51d9190f837c6ee554
  - Build new functest-smoke-cntt containers

    [1] has been backported to Jerma, Iruya and Hunter.

    [1] https://gerrit.opnfv.org/gerrit/c/functest/+/68668

    Change-Id: I4c7f58a1a07791bf37c0b35d55b61a41fe5c6566
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 2258bf4..368adda 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 2258bf4966ebba11e9ae16689af15c055eabc9d1
+Subproject commit 368adda8beebcf81166a1a51d9190f837c6ee554