Update git submodules

* Update docs/submodules/functest from branch 'stable/euphrates'
  - Fix links in configguide.rst

    It also removes trailing whitespaces.

    Change-Id: I6a7e4aaff700a85ff1c0c2741624e9359441e0ac
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 3c5240c50cf2a158a4cf033ab0268580dfe52754)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 488d5c8..ae96d48 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 488d5c8496fb7c8259a9aeef9f2ad6d437f3aeae
+Subproject commit ae96d483a99cfa2506128abcbf6b72d890407089