Update git submodules

Update git submodules

* Update kubernetes/aai from branch 'master'
  to 18747ec29947084c571d66f37f1a0fe85fbe4702
  - Use global storage templates for PVC

    OOM has now templates in order to create the needed PVC, using:

    * a PV with a specific class when using a common nfs mount path between
    nodes (sames as today use) --> is the default behavior today
    * or a storage class if we want to use dynamic PV.
      On this case, we use (in order of priority):
      - persistence.storageClassOverride if set on the chart
      - global.persistence.storageClass if set globally
      - persistence.storageClass if set on the chart

    I've also created a PV/PVC for elasticsearch has it was hardcoded to
    hostPath.

    I've also removed hostPath for job logs (aai-traversal logs were not put
    into the desired hostPath)

    And I moved the 3 jobs of aai-graphadmin into 3 files as it's a better
    practice (several object in the same file can lead to unexpected
    behavior).

    Behavior is supposed to be exactly the same as before.

    Issue-ID: OOM-1227
    Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
    Change-Id: I71c6cee8d7c33ef7bd39c40a43c26b377d4ceec3