Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Stop building functest-features(arm64) via travis-ci

    It simply raises timeout which can't be increased.

    Change-Id: Iba564873ccf7f50922641fad8987b1d7447f7ed2
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index a835cc3..405db4f 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit a835cc31512fdab148552e23e6d68441f0505211
+Subproject commit 405db4f5b83ff705074c167d582b7357668eff6e