Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "put htmlize directory under jjb/releng"
  - put htmlize directory under jjb/releng

    centralize jjb related scripts

    Change-Id: I4abeb06f17b48b8e7ac15803db0f3ce7eb0c1b93
    Signed-off-by: SerenaFeng <feng.xiaowei@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 2ec02b9..629d701 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 2ec02b9acd6bcdf251ef5ae1cb8a4a304aed1195
+Subproject commit 629d7018a9ee709d79afedcf0074a0a6a3c61d51