Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Stop including html files in devguide

    The output is wrong and obsolete.

    Change-Id: Ib2faa161ebabfa51d677c38a0ec3943faf6f919c
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 9717025..de4d09c 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 9717025c9f24116e827f5be6031e5d48805e24d2
+Subproject commit de4d09cf210179f3944b854f4a16c103244032d9