Update git submodules

* Update docs/submodules/functest from branch 'master'
  - ci/download_images.sh: Reduce wget dot reporting

    Downloading large images outputs a lot of useless dots to show
    progress. Switch to 1M per dot (from 1K).

    Change-Id: I00e3d09ef28e7722798eeadc27649a96398aac32
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 69f0b26..734347c 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 69f0b2665b397e5128bf7a83541d3567c4834af3
+Subproject commit 734347cf09463fbfef7c8eab6484f2487a2609f9