Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Add unit tests for promise

    Change-Id: I538fcedbfbef46ae36b8eff5a20acaa28a8bfb85
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 72c085a..f335f00 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 72c085ac3fde2a294a09b2065e1fe38a33f8841c
+Subproject commit f335f0032b9eb0847de4fd1261f063012bc4d2f5