Update git submodules

Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to da4b64ee9c8b13f5a634d79318e3027f78abc5b1
  - Merge changes I6421b55d,Icdb55918

    * changes:
      Wrapping-up download refactorisation
      Adding rpm data list

  - Wrapping-up download refactorisation

    This commit is making required adaptations mainly in BuildGuide
    and removing deprecated old version of download scripts.

    Change-Id: I6421b55d116831dc3b47c7630e91d361d56414c8
    Issue-ID: OOM-1803
    Signed-off-by: Michal Ptacek <m.ptacek@partner.samsung.com>
  - Adding rpm data list

    This list contains full record of all needed rpms. We decided to
    enlist full list including versions to have full control over what
    will be installed and what was verified.
    Goal is to avoid issues about different dependencies coming later.
    It is expected that major change will cause download to fail
    which will work as early detection of problems.

    Change-Id: Icdb55918dc20660c2c835d0e759b3eb5bad1f2fd
    Issue-ID: OOM-1803
    Signed-off-by: Michal Ptacek <m.ptacek@partner.samsung.com>