Update git submodules

Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to b16e8fe5947741d6c6c7f3458a87a6efa6a22859
  - Merge "[NBI] Use the common galera cluster of ONAP"
  - [NBI] Use the common galera cluster of ONAP

    Instead of having our "own" galera cluster, use the common one already
    proposed by OOM.
    If a local cluster is needed, you just need to set
    global.mariadbGalera.localCluster to True.

    Also create a common chart that create the needed values for the
    database.

    Change-Id: I9ad551b76a40732b4ab3fc34ba7cde6ca90fe432
    Issue-ID: EXTAPI-348
    Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>