Update git submodules

Update git submodules

* Update docs/submodules/barometer from branch 'master'
  - Merge "[conf] Update the ovs_events config for Apex"
  - [conf] Update the ovs_events config for Apex

    The SendNotification option in ovs_events is set to
    false in Apex templates. This means that no notifications
    will be emitted on link status change.

    This patch updates ovs_events.conf.erb to match the
    config in the samples folder, adn the ones used by
    the reference container

    Change-Id: Ia034b81aedc67c2ced51cbf831baca176218d7d3
    JIRA: BAROMETER-91
    Signed-off-by: Emma Foley <emma.l.foley@intel.com>