Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Fixes image download script"
  - Fixes image download script

    Fixes Include:
     - Fix previous behavior where multiple copies of the same file would be
       downloaded as blah.qcow.1, blah.qcow.2 and not overwrite original
       file.
     - Fix issue where files were always downloaded, even when they were not
       different from server version.

    It temporarily stops downloading from marketplace.openbaton.org:8082
    which is blocked by LF firewalls.
    wget options are tuned to avoid wasting jjobs time.

    Change-Id: I9191847a3f80045329c160e86655cc0a0e80831c
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 9a9856b..35373ca 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 9a9856b49a1758501d11cb0a47c713f92c5adc11
+Subproject commit 35373ca7f27431f8dd59b45f8d2cf7618b98c699