Update git submodules

Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "[baremetal] cleanup: rm cloud-init iface config"
  - [baremetal] cleanup: rm cloud-init iface config

    Upstream commit [1] now handles cloud init interface configuration
    cleanup, so drop our explicit config from reclass.

    [1] https://github.com/salt-formulas/salt-formula-linux/commit/b333d284

    Change-Id: Ifd624f1e884d0d884513a3a7c3e18ffe3f00949a
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>