Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "[baremetal] Fix cmp proto dhcp on PXE/admin"
  - [baremetal] Fix cmp proto dhcp on PXE/admin

    Although we properly filter the PXE/admin interface in the common
    openstack_compute_pdf.yml.j2 template and use DHCP instead of manual
    setup, we failed to do the same in scenario-specific overrides
    (ODL, OVS), so we end up with 'proto: manual' on PXE/admin on cmp
    nodes.

    The fix is trivial and reuses the mechanism in the common class in
    scenario-specific templates (if interface is PXE/admin, use 'DHCP'
    instead of 'manual').

    This solves the issue of broken connectivity to Salt master after
    cmp reboot.

    Change-Id: I1953d03343190acb2efcab4412a3d37e130b0ea9
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 6ab6935..924f8cf 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 6ab6935577900e598ca60aaed14d2e73f7b1633f
+Subproject commit 924f8cff8c974547db29f16e150f2041af5de9e8