Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Apply neutron formula patch after formula update

    Change-Id: I8dba3676adc8cc49731d91db7cc028a9c5b1627d
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index f2b1d6c..952b5cc 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit f2b1d6cfe31a451b0608b9a2aadead2dcf4cfabb
+Subproject commit 952b5cc60febe14df428f92280448327572d5c24