Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Add upper-constraints.txt for Functest"
  - Add upper-constraints.txt for Functest

    It completes OpenStack's upper-constraints.txt by adding Functest's
    requirements.

    This file is temporarily duplicated to allow building the containers.
    It will be removed via a next patch when this patch is merged.

    openbaton-cli could be updated (e.g. 3.2.8).

    Change-Id: I26de2d22f9e8973c5a58c3cc5129142fa628e57a
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 3841592..451dc20 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 38415929779dff830fa73835a6e5755476b30559
+Subproject commit 451dc20e8da42f0aaff9b563d08b4c4abab67b33