Update git submodules

* Update docs/submodules/fuel from branch 'stable/euphrates'
  - Merge "[baremetal] Fix cmp proto dhcp on PXE/admin" into stable/euphrates
  - [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>
    (cherry picked from commit 19913423a73f5913f7aa12a0737b2d2d36639efe)

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 4b26800..16aca75 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 4b268006c62db90cd1081ee57cab3bb30376e506
+Subproject commit 16aca75cd5e292c1e7bc9aeee93b47042a58a4ad