Update git submodules

Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to 0256e4b2031cec54abd07e7c6745176b83815cb4
  - Merge "[Modeling] Move mariadb-galera to etsicatalog"
  - [Modeling] Move mariadb-galera to etsicatalog

    etsicatalog is the only component inside modeling which use this DB
    thus there is no point to keep it outside of this component.

    Passwords and other bad stuff is left intentionally as this is just a
    first patch for this transition.

    Issue-ID: OOM-2286
    Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
    Change-Id: I4f592b736a86c7acf9ee43b0f6e136e5f1506847