Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Build in opendaylight service mask

    Oxygen has an issue with broken config/data cache caused
    by service restart in the middle of initial boot.

    Change-Id: Ia30c76b67566ab8a2fb9045d0e10ca788f1a06a6
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index ef46d8a..2d2f599 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit ef46d8af46c861bdff5ba835bd89b97b334ea45c
+Subproject commit 2d2f59907d578d266e1aa19040314dc15b27c0c6