Update git submodules

* Update docs/submodules/functest from branch 'stable/euphrates'
  - Update results printed in configguide.rst

    It mainly takes into account that:
      - vyos_vrouter is now available in functest-vnf
      - all orchestra testcases are mostly disabled
      - odl is skipped if os-nosdn-nofeature-ha

    Change-Id: Idc92cc82a1656d9118d080eeb1f7e1fc80f6296e
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index ae96d48..e556a79 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit ae96d483a99cfa2506128abcbf6b72d890407089
+Subproject commit e556a792b6b0c7275c20c779688f4ffc383b7f2a