Update git submodules

* Update docs/submodules/fuel from branch 'stable/euphrates'
  - Clean up noifupdown support patch

    The patch has been merged to upstream linux formula.

    Change-Id: I09f96be920c5c3ecd09fd2ab132e25519902239b
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>
    (cherry picked from commit a6bc08b2be51b069b629d357a44cfa5979f09c2a)

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 24ebffe..e2433b3 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 24ebffe4d0920d7c3c14d29dbe15f69cfdf732c1
+Subproject commit e2433b3d8908086cf3ba6ae04ee9d06bf7306bef