Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Add Kubernetes test results to functest userguide

    Change-Id: I8b9d7a449ea3b123993c6619b368a4afb0dd2e3e
    Signed-off-by: Konrad Djimeli <konraddjimeli@gmail.com>
    (cherry picked from commit f0b362607b73f03d7ceef4e358920a5186b2c780)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index c366546..d57744f 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit c3665460e44f7b8721d57f51eba35e9207e65cc7
+Subproject commit d57744fb464b3de445d96b1d30a91dc8c15735b8