Update git submodules

* Update docs/submodules/functest from branch 'stable/euphrates'
  - Harmonization titles of the testing project

    Change-Id: I9ebb488d77274219fca556760f0408a2bb1f6880
    Signed-off-by: Morgan Richomme <morgan.richomme@orange.com>
    (cherry picked from commit 198b2ab033ea14a079123dbe12d85950b95c68bd)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index a759ab6..f59ab4a 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit a759ab6d7a2763f9b55af398163e905e207eef30
+Subproject commit f59ab4a4b29387c347be353d128bf08c39507f34