Update git submodules

* Update docs/submodules/barometer from branch 'master'
  - docs: update ovs plugins userguide

    Change-Id: I7aa286bb8e3d38e3255b896351cf41e4c7d03a37
    Signed-off-by: Taras Chornyi <tarasx.chornyi@intel.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index 15ec4e3..7116516 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit 15ec4e3a0edcb0d38313b19f63bc18d0121e91ef
+Subproject commit 711651600397b7eac3d5be2c185a431f48f4b28f