Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [baremetal] Enable ceilometer/aodh services

    Change-Id: I34706afbdbcbdaace0b0ae6c2c2e8cb932812d4e
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index a1a413a..5199ba8 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit a1a413ad65c31ebf5dc42924f7ed04ab02a04872
+Subproject commit 5199ba88afc4f115b947a51080fc89ea70e5a1e8