Update git submodules

* Update docs/submodules/multicloud/k8s.git from branch 'master'
  to 65003b68b650dee4bb81d975707a580722fc3897
  - Merge "Fixing ansible version"
  - Fixing ansible version

    It would be safer to fix ansible version to prevent issues
    coming with newer ansible releases which might not be
    compatible with current playbooks within this repo.
    E.g. 2.8.0 is not compatible.

    Change-Id: Ia1b54c7644bcaf6c453ff6586682ca35ced9acec
    Issue-ID: MULTICLOUD-634
    Signed-off-by: Michal Ptacek <m.ptacek@partner.samsung.com>
    Signed-off-by: Samuli Silvius <s.silvius@partner.samsung.com>