Update git submodules

Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "[ovs/dpdk] [noha] Do not add private nic to ifaces"
  - [ovs/dpdk] [noha] Do not add private nic to ifaces

    All settings specific to private nic are handled by linux.network.dpdk
    but since the private nic's `interface.type` is currently 'eth', it is
    not filtered out from /etc/network/interfaces.

    To prevent this, define `interface.type` as a dummy value containing the
    'dpdk' substring.

    Change-Id: I565153ee80698572209e12b4eec5f44f9416d945
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>