Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Don't trigger odl_l2-nofeature scenario by time

    when patch verify, we define the os-nosdn-nofeature-ha scenario for functest

    Change-Id: Ia7a11817a29a2e5e9649708652f8655d1cf89361
    Signed-off-by: wutianwei <wutianwei1@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index af3d0f6..7570294 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit af3d0f65484c7ad99f716dae0adcf9b2044bee05
+Subproject commit 7570294d4dec8de4c172c3115247821b5e0b3d44