Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [reclass] Add missing neutron keyword in class uri

    Change-Id: I71fdc7ccd84a0700333734b5144a4281b53cf25b
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 7d67464..bb880d0 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 7d67464f9e33659de42ac4f1591f7a2cdc5bd178
+Subproject commit bb880d0696a9af9f1800e94d1d68cd7f60c66021