Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Update release notes for 6.2.0

    Change-Id: I140b02cb0b7c991f0818b7d3e3447e8485e923ee
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index f794851..c963af3 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit f7948517b7cfabf8405e64eb4c2057c0105b852f
+Subproject commit c963af3d88df438e4a1030408b878298488b4c10