Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Fix logger name in vping_base.py

    It conforms with logging.ini which requires qualnames.

    Change-Id: Ic2f849009c31a3a7bc406fc44c4917d19ccf2424
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 06d0e32..9916cd3 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 06d0e3210b1d53f936729a2b65f474864d46218e
+Subproject commit 9916cd3fbd116762a84ca3a81dd08315d0b747cd