Update git submodules

* Update docs/submodules/functest from branch 'stable/euphrates'
  - Merge "Enable orchestra testcases for Daisy only" into stable/euphrates
  - Enable orchestra testcases for Daisy only

    The current testcases have several issues which limit the
    possible successful runs to Daisy [1].

    [1] https://jira.opnfv.org/browse/ORCHESTRA-17

    Change-Id: Iecaf21738e19aae6a88171385f11afcffd28a348
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 850d3ec6dc2ed582b9d36ac2927e0eccd1f88199)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 821a07c..50645d3 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 821a07c25a55ee60993c2864e0930338d67f4d21
+Subproject commit 50645d3d21e9e724c933a8f1981e0c1d7a80f7a2