Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Select the right quaff repo

    Change-Id: I0aa090bf1f8c6220918ebc1b041bab4a43d444b5
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index e9b5f08..759cd4b 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit e9b5f08ddbdfefd6cbdf226a10b79b2349c4c86b
+Subproject commit 759cd4bb92e171b16af5c6c1206352b92096d596