Update git submodules

Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to 9e8be643be6583e998a17949ceb1b6e945b5e95f
  - Merge "[DMaaP DR] Enable persistence for Claims"
  - [DMaaP DR] Enable persistence for Claims

    Currently, persistence was not enabled, preventing creation of relevant
    PV/PVC for DMaaP DR.
    Setting this persistence as it should be the normal behavior

    Issue-ID: OOM-2332
    Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
    Change-Id: Ic36c0956d40333529d6325af38e33a9bc6838946