Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Update Release Notes

    Change-Id: I51fd66dc73bb5f0628454eabbd629a6fbda3666d
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 2098c49..4879a87 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 2098c49184b1c97b89b4d88dffa2e2a9b3571f04
+Subproject commit 4879a87a066a4cd56fdcf21422e48508a05922fc