Update git submodules

* Update docs/submodules/fuel from branch 'stable/euphrates'
  - [ovs/dpdk] Split out networking restart action

    In common openstack_ha state the networking service restart
    has no expected effect, so split it out into the detached
    post-deployment state.

    Change-Id: Iaaae0cd048474667895b7abf2a77196ee3dee14b
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index de0bc2f..d9c4d13 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit de0bc2fc6e1c911630b0564a5ab384e27e1ea445
+Subproject commit d9c4d1311a585f56e5e4ca62d4415581ab21759e