Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Add docker push job for arm

    Change-Id: Id7e9e0b3a28102b6efa1e4fbd4c648eca10d9456
    Signed-off-by: chenjiankun <chenjiankun1@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 5861b6a..b64574e 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 5861b6a705f3fbe3439c22a6aaac5197f92ceae4
+Subproject commit b64574e2917e2c3633177267eb8b93b901eff53a