Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [reclass] Consolidate all passwords

    JIRA: FUEL-378

    Change-Id: I00832d697d83c374628fa9d759c125e0b6ca64cf
    Signed-off-by: Guillermo Herrero <guillermo.herrero@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index d7bf560..c0de090 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit d7bf560e12151853c3121ba39ad9bf6bd47befcf
+Subproject commit c0de0902fdb9c15033ae830b31bfcade8eb1c3ec