Update git submodules

Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to f7e055a3e51f306f1dc78c46f36a4b23137cabcf
  - Merge "[POLICY] Use common secret template in whole policy module"
  - [POLICY] Use common secret template in whole policy module

    All subcharts are ready so now we can remove hardcoded mariadb
    credentials in policy module and depend on common secret chart to
    generate them for us at the deployment time.

    Issue-ID: OOM-2342
    Change-Id: I84bfc30511312be0b2e614ddff4676f36d85619b
    Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
    Signed-off-by: jhh <jorge.hernandez-herrero@att.com>