Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "refactor config parser to facilitate adding new configs"
  - refactor config parser to facilitate adding new configs

    refactor hardcoded config.py to facilitate adding new
    configurations come along with web portal and Authentication
    features

    Change-Id: Ibc16166ade0d6e730bb4c9d81e9b9bc9b297faa1
    Signed-off-by: SerenaFeng <feng.xiaowei@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 7eb4f21..00f3a6a 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 7eb4f218222da336cb460deeffcf3cb6e39e9d07
+Subproject commit 00f3a6a8f37f1ee4ddfb7f24f0cf9bb4e3b124c1