Update git submodules

* Update docs/submodules/fuel from branch 'stable/euphrates'
  - Merge "Apply apache state on proxy nodes" into stable/euphrates
  - Apply apache state on proxy nodes

    Apache module will take care of ports.conf file to prevent
    bind socket conflict between apache & nginx services.

    Change-Id: Ia76ec356002e1db0dabd20d8f355a1b16fc07b30
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>
    (cherry picked from commit eb4645206d6d74992fca3b8726ee2eebca97205f)

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index d8508c5..088f3c7 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit d8508c56661b0e0fb40e82e9feb1df1416749913
+Subproject commit 088f3c7325d5ca443c6f9e202497503982c61401