Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Remove the obsolete configs in config yaml"
  - Remove the obsolete configs in config yaml

    Change-Id: I389f3f4b09274529f92d7a74ebfb0cdd257c493a
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 8679bd4..3bcdb73 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 8679bd4ecf8abbd88c437ad49a1339f03c0ad273
+Subproject commit 3bcdb7388a2bdd1a4950afd6d5ca778b289e988e