Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Add the skipped testcases into details"
  - Add the skipped testcases into details

    When running tempest_custom, if all tests are skipped, record them
    in details.

    Change-Id: Ie18ec0911ff298f91c524a9cd039929c2d0f6425
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 29085f8..0b46845 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 29085f8b3de77ce989a5ab2c2a8ac87c657fe54c
+Subproject commit 0b4684562fa417201477fc4643a4eb4025847a84