Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "[fuel, armband] Add os-ovn-nofeature-ha scenario"
  - [fuel, armband] Add os-ovn-nofeature-ha scenario

    While at it, cleanup useless ovn/Euphrates jobs, we didn't have OVN
    in E release of Fuel@OPNFV.

    JIRA: FUEL-329

    Change-Id: I4a9b476c292a05cf0b9cadaa3102ebccf2baa10a
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index d47f716..36bc31f 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit d47f716a4a27fe7e4ff633ee890d34aa4a431d3d
+Subproject commit 36bc31f02c727fde4bba535750d0b40f2cfe11b2