Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "[odl/noha] Simplify net scheme on compute nodes"
  - [odl/noha] Simplify net scheme on compute nodes

    Align external network scheme of computes with gateway node
    to setup just ovs bridge with physical port plugged in.

    Change-Id: Ie7919abc8c1f0a0905764b6354f29ad68d3c6557
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 5aca58b..bb55bb7 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 5aca58b8deeec57b22249bb1d386de20ab7c2240
+Subproject commit bb55bb795bd8f47598a38d445e0083fb6ca96b50