Update git submodules

* Update docs/submodules/fuel from branch 'stable/euphrates'
  - Revert "[baremetal] Fix maas_subnets without maas_fabrics"

    The upstream commit has been merged
    https://github.com/salt-formulas/salt-formula-maas/commit/0c622327
    This reverts commit 2c48915a1a77aa3ac0133155fd0cdadbf280493d.

    Change-Id: Iff86f3dc171371903e3294eed43977eb6197a5e7
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>
    (cherry picked from commit 2ecb98f7e7c67984fd66e2d6b17d5c05c058490b)

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 2e7e259..e3302df 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 2e7e259988bc40ff217de6c2035b689f17794162
+Subproject commit e3302dfa84ddc65fc1b8f79a209fa0b621be379c