Update git submodules

* Update docs/submodules/fuel from branch 'stable/euphrates'
  - [baremetal] Move include.proxy yml to proper dir

    Change-Id: Id46b454b224dacdbaf675155c949d0998f0d0036
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 7804d3d..81f3c7a 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 7804d3d7d42277d9616afcd6cbef9fa70155b470
+Subproject commit 81f3c7a84d84c4f936a81d588f819d342c01e1f1