Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Set key owner to original user in case of sudo

    Change-Id: If964d36ad4f0cb6f1b2caf8544d4e35487f59c6c
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index df50704..bba5e84 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit df50704b226a11f6ce9d0a46b178a5b8e8cd0284
+Subproject commit bba5e84824a07416db140aa63b27ee6fc6e903cd