Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Add a key benefits section in Release Notes"
  - Add a key benefits section in Release Notes

    It also precises the side effects if test cases are in failure.

    Change-Id: Id4a2a3428da33deed51415fce5d98b81e64d35fe
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 294d5c5..7d81023 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 294d5c5590426b44a20b7feb55ac60dfe9b4898b
+Subproject commit 7d8102347f0d353483cff28bce317403cf8cf9f6