Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Fix links to remove references to submodules

    It forces one single documentation.

    Change-Id: I47edd947885a4c3fb9e6579cf61fa7473b47ba31
    Signed-off-by: Aric Gardner <agardner@linuxfoundation.org>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 5eda283..a4990a6 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 5eda2839ca79d4cc82b0940ff6e123db96bfbfbe
+Subproject commit a4990a60c9b8e499e698fab28f9368816e50c6f7