Update git submodules

* Update docs/submodules/releng from branch 'master'
  to db957937afcfe98d5017b5bc9f4ed22fb7812b26
  - Merge "update the cirv.yaml for Git tagging"
  - update the cirv.yaml for Git tagging

    Signed-off-by: chenliangyjy <chenliangyjy@chinamobile.com>
    Change-Id: Ibb8ccb08b953b1a64227250d35b81d76aba9ad5c

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 3c719e4..db95793 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 3c719e48b88383044c452774d1ae1ebd630e70f1
+Subproject commit db957937afcfe98d5017b5bc9f4ed22fb7812b26