Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Fix unix permissions in docs/com"
  - Fix unix permissions in docs/com

    It applies restrictive file permissions [1].

    [1] https://security.openstack.org/guidelines/dg_apply-restrictive-file-permissions.html

    Change-Id: I2b86eaeb44afca999e485308b250004181e103b2
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index c245b4a..4d3bd9b 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit c245b4a4b92285c5585700f81a1a6e4379b755b6
+Subproject commit 4d3bd9b6ef97af407c42cb5992284f5f5ce68a96