Update git submodules

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

    Change-Id: I3f4ed1c6bb82e2797841e129f035ba27a5471eba
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 29d58a3..305babe 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 29d58a38f38284cb9a2fa9b9da87682e9256dc5c
+Subproject commit 305babe027f847085baf509d889ec408aa13a168