Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Remove hw_video_model and hw_firmware_type from metadata

    Starting with the Openstack Queens release,
    hw_firmware_type=uefi is implied on AArch64 by default
    Using virtio-video, now default in nova, should be used
    instead of VGA

    JIRA: ARMBAND-388

    Change-Id: I393093c5a1a9dd9c8259b3987db22650313cf249
    Signed-off-by: Delia Popescu <delia.popescu@enea.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 5522ecd..94ddff7 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 5522ecd302ee54b494714cb2e1af0fe2381e5c37
+Subproject commit 94ddff710a8d4a794477becfcca86fd84b34bc54