Update git submodules

Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to 64e622c75a90be63a55e5b87240084f0a7466633
  - Merge "[POLICY] Allow to override username and password from env"
  - [POLICY] Allow to override username and password from env

    To avoid hardcoding password in base.conf let's allow to override DB
    username and password from the environment variable.

    Issue-ID: OOM-2342
    Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
    Change-Id: I9fc9506b3908da06d0ad221f63d0a56c783788db