Update git submodules

* Update docs/submodules/releng from branch 'master'
  - [Functest] Add os_cacert file mapping for compass master

    Change-Id: I1e786839524de2bad09df39bd9450068cf3d2c96
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index d1db51f..4130499 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit d1db51f2a71f4a66e727fba76a0bb86c2d2c12f4
+Subproject commit 4130499056381de0058ca9e23d2b3deb66e0b902