Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Revert the unix permission of yaml file"
  - Revert the unix permission of yaml file

    Change-Id: I99da14477ab785475e425475fedca90a69eed8eb
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index d720efb..8150d3c 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit d720efbc49f085420325a7a8b2fbd81f5e2724b4
+Subproject commit 8150d3cc0157e15003cf0e6e99fcf50db386bef2