Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Ensure that aarch64 patch can be applied

    It simply creates a new testenv.

    Change-Id: I2675d1b3240a59fa985bd91f979efe1896c3d605
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 2750fdc..0516ee1 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 2750fdc261941944526a4db7f540cc09480829c6
+Subproject commit 0516ee14b46a7327325bc4e8354a9b610276a770