Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Fix tier/testcases list"
  - Fix tier/testcases list

    Change-Id: I15da2df4905efbca4415739fd7c6391b51168c82
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index f0870e3..1652a91 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit f0870e3735324941f5bd77243f36f9214cd531ac
+Subproject commit 1652a913ee3085318a65711013975af4b5cbc341