Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Set public endpoints to external interface

    In order to pass functest/api_check, configure public endpoints of
    openstack core services with external ip address.

    Change-Id: I519865df5700acbcf542ea71efd87780e9f1d9d5
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index b9e85b2..0941512 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit b9e85b20595a7b4d0580657e75a1a92ee615a106
+Subproject commit 094151224e3dd1f0d19acc184ffabdc9b597255e