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>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 9a4d570..22bbdf2 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 9a4d570364ae9126b7886bc187cc7f7e0f9ced7f
+Subproject commit 22bbdf21851c3fdeb10579fc6b0e77a93e90e813