Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Updated from global requirements

    Change-Id: I98eb95664569d392af266b22c054f7a2121c98db
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index d5fce8c..8d5ff25 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit d5fce8c12bc73c1b1547df2750563c271a3ab3f6
+Subproject commit 8d5ff2546daf62ab201adfe2b9096ab4c0a950cd