Update git submodules

Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to 69d40108919ea4cece1db1632a6dfd43750d4840
  - Merge "Adding Ubuntu support in Ansible - certificates role"
  - Adding Ubuntu support in Ansible - certificates role

    Extending ansible playbooks of ubuntu support.
    Creating new test with Ubuntu image for Molecule in certificates role.

    Issue-ID: OOM-1671
    Signed-off-by: Jan Benedikt <j.benedikt@partner.samsung.com>
    Change-Id: I82f0f8590812c277f2969d71f95fb6475c72f7c8