Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [patch] Fix OVS ifup workaround

    Do not assume routes are on the same OVS port as the one currently
    being configured. Instead, apply the `unless` ifup condition for
    any OVS port.

    Change-Id: Iea8084f9e50401d300feb7ed16f90b430680cac5
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index bb3a642..b1849f6 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit bb3a642e783b59ae2decb3b73d91f5bfca3afaef
+Subproject commit b1849f630a8de3dfce2e91fc375d9e901b90843b