Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Bugfix: Change http_pass to proxy_pass"
  - Bugfix: Change http_pass to proxy_pass

    http_pass is wrong for nginx, we need to change it to proxy_pass

    Change-Id: Ib679b36a4a139c02647564719e1cfc49a9f376a2
    Signed-off-by: chenjiankun <chenjiankun1@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index ed00417..be9abc7 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit ed004174483feab0bff358a5e7222e80af09d87a
+Subproject commit be9abc71a8954ff16931b2fe5d535bc583513f46