Update git submodules

* Update docs/submodules/fuel from branch 'stable/euphrates'
  - Revert "[baremetal] Migrate public bridge to ovs"

    Vlan tagging on ovs+linux ports doesn't work as expected.
    This reverts commit c3316c713c936b154b979aa985a400f4b791c0cb.

    Change-Id: I339cd741c83781e4a946bfde40f7f2551bb9cf02
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 4358626..de0bc2f 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 4358626b73ccf83ced0c0178185dd9a868d0f4d7
+Subproject commit de0bc2fc6e1c911630b0564a5ab384e27e1ea445