Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [virtual/odl] Turn off websocket for pseudo agent

    To prevent error in packet_handler callback: AttributeError:
    'PseudoAgentDBBindingWebSocket' object has no attribute
    'update_agents_db_row'.

    Change-Id: I1a6a4b95ce3290ce108bdb91ae8eb5e85a13ef51
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 2f58548..4e1e397 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 2f58548c3e2f9068a2f6dfa682be7b462b41f29e
+Subproject commit 4e1e39700138700dd8744fbba71379fcf4f190bb