Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [odl/dpdk] Make dedicated public network scheme

    In order to avoid TCP connection checksum issue (i.e. TX offloading
    on ovs bridges) add linux bridge connected with ovs public bridge.

    Change-Id: I4d266dd92756d5326dfa3d74fe2f376b26415812
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index c4d91ec..34d812e 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit c4d91eca1ba1614648fb2ae96340ed2876f64cd3
+Subproject commit 34d812e03b3e039c69f3b18c098cd924e10551c5