Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [baremetal] Enable cinder-volume service

    Change-Id: I60a5566de43ca58f3f172611c95546b1353f8406
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 936b4c7..405d814 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 936b4c7df84cc725924c62b2ca3dc5e89509ba50
+Subproject commit 405d814aa17b6cb52bf2fd26c1fec62679e8ff5e