Update git submodules

Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to 6aa8757e9ad80bc8d542390bb293d9e91ffd0481
  - Merge "[COMMON] More versatile templates for storage"
  - [COMMON] More versatile templates for storage

    1. Add the possibility to specify a suffix and a specific persistence
    information path.

       This is useful when a deployment has several PVC

    2. Create a template for Volume Claim Templates in Statefulset

    Issue-ID: OOM-1971
    Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
    Change-Id: I0ed47818e8f5a73b54f95cb82615adaa03bf8ce8