Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "change the dovetail weekly job pod"
  - change the dovetail weekly job pod

    Change-Id: Ie1183ad0420058ddba8b46e474740a057dcf3b12
    Signed-off-by: wutianwei <wutianwei1@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 8efd31d..4e72338 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 8efd31d199379d593f3ea74f7d8a7eefd6046f61
+Subproject commit 4e72338e8ac11ab69bd94a31fb27886f5f632543