Update git submodules

* Update docs/submodules/fuel from branch 'stable/euphrates'
  - [ovs/dpdk] Return true on linux.network state

    linux.network state is expected to be down until node reboot
    to activate required hugepages therefore return true in any case.

    Change-Id: I61deac12b9ac212c5f79cdcce30cda8e5d24413b
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>
    (cherry picked from commit 044f49fd195526d8c00967fb9a0b6b1ab0a36c14)

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 94825e2..1b0260a 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 94825e25dcc5bf4a8490690fc1cf423df0e9d7fe
+Subproject commit 1b0260a68db07fa0dd113f61b823dd99bc15085e