Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Add euphrates as a docker tag to the release notes

    Change-Id: I35080b3e701de6341926f86e8aa1910ef777f565
    Signed-off-by: Jose Lausuch <jalausuch@suse.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 5febab0..b94eea5 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 5febab052b0bb46e3ebe3bcedeb28ccc962ec150
+Subproject commit b94eea5dc2d97a5055d2a98b7b330cc52cac5649