Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Fix invalid method names in vnfs

    Change-Id: Icff1a53ffd7b59d46543b79571b45872a9f243c3
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 383ed86..ab24f04 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 383ed86699816f633f007c515338d0fa022bf4fc
+Subproject commit ab24f04ce0a27686e5f0c3f465ccb0ff06c48dfe