Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Print vping output instead of Paramiko object

    Change-Id: Iddc1abdf443e482e8748434a4ba7d85709d8cd0e
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 72b17bc82ac5c6a388adbfc8a564f118d0ccd247)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 05f1b7d..50366aa 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 05f1b7d96aa8e08ae1fcf6509c1981e264e60120
+Subproject commit 50366aa0a3e3ce06bcf7879317467020a6faa97c