Update git submodules

* Update docs/submodules/releng from branch 'master'
  - remove redundant docker push job

    Change-Id: Ife140195cf5f863a389e983e4ae0c759ca347793
    Signed-off-by: chenjiankun <chenjiankun1@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 104de70..f55686f 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 104de705d9530c061925b0fb858ac2acf4b074c1
+Subproject commit f55686f5a9ebfe7763805cfdf9d7a05ad7132100