Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [ha] Add ovn scenario placeholder

    - dummy copy of os-nosdn-nofeature-ha masquerading as
      os-ovn-nofeature-ha scenario placeholder;

    JIRA: FUEL-329

    Change-Id: Ic5e6d65cf057289bb13ce2fa157b6ba53d7dab80
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index bb880d0..efa0ac5 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit bb880d0696a9af9f1800e94d1d68cd7f60c66021
+Subproject commit efa0ac5f3f664edfbb6a6fb93d88c6f67d732417