Update git submodules

* Update docs/submodules/releng from branch 'master'
  - clarify obsoleted test configuration files

    delete noparam.ini/nosection.ini/notboolean.ini/notint.ini/normal.ini
    substitute normal.ini with etc/config.ini

    Change-Id: I7e2fa331736a2f9bf807814416a3118be5f613e5
    Signed-off-by: SerenaFeng <feng.xiaowei@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index a137b9d..bbc5791 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit a137b9d89ae9e982e5edd33670c040fc4d8603c7
+Subproject commit bbc57916c38601769aff5650f716c9d373795c22