Update git submodules

* Update docs/submodules/functest from branch 'stable/danube'
  - Add Danube 2.0 reporting status

    Change-Id: Icc09b824a4e7906dfab031b679ba3d0aa86ab0cd
    Signed-off-by: Morgan Richomme <morgan.richomme@orange.com>
    (cherry picked from commit 94807a8c352cf49df156f7f50f2a21df7ba34115)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index b17e3b9..3a86d68 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit b17e3b96876772149846860eb17ddf83e1f13f0c
+Subproject commit 3a86d68a88ceb80fd335c2ed689be1cc1b41bc6a