Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "disable TestAPI update temporarily"
  - disable TestAPI update temporarily

    recently I plan to make some effort on TestAPI,
    add scenario processing exceptions, perfect swaggr documents,
    refactor unreasonable coding...etc, all of those will not change
    the original process or data structure, whilst many patches
    will be submitted. Because there is latency during TestAPI update,
    and it will cause test results lost, so I think it is better to
    disable TestAPI automatic update for now and re-enable it when the
    work gets done.

    Change-Id: I5ceab808350a1ece500c8743622d197326aa5419
    Signed-off-by: SerenaFeng <feng.xiaowei@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 0e1ec10..b485197 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 0e1ec1044735fd3e946f3c8b7480a464b48f4d2e
+Subproject commit b485197b601e77e73690854bc9da6c0428fa5b6a