Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "[baremetal] Fix: wrong nic name idf index"
  - [baremetal] Fix: wrong nic name idf index

    This was only affecting pod deployments with
    different board models, under the current limited
    support:
    - 3 KVMs will be same model and have the same NIC names
    - 2 Compute nodes will be the same model and have same NIC names

    For the computes nodes, br-mesh NIC name was wrong due
    to incorrect idf mapping

    Change-Id: I9685b35cb23b03be9fc0e6fe16c0712a9ad70e19
    Signed-off-by: Guillermo Herrero <guillermo.herrero@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index c2174cd..cbc651f 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit c2174cd6d489b9079faec3523f175725da08f9df
+Subproject commit cbc651f281c280fab346b044a2a41083f3ff9468