Update git submodules

Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to aaf39b1e4cc736fa6f192d46549afaab303c350d
  - Merge changes from topic "data-download"

    * changes:
      Improve download of npm packages
      Improve download of http files
      Improve download of rpm
      Improve download of git repositories
      Improve docker image download script

  - Improve download of npm packages

    Issue-ID: OOM-1803

    Change-Id: I332d7ef6ad628a08b5c9279d65b9d7286f06ee97
    Signed-off-by: Milan Verespej <m.verespej@partner.samsung.com>
  - Improve download of http files

    Issue-ID: OOM-1803

    Change-Id: If2aeb1aa4fab27641511a6300832ccd7be95e846
    Signed-off-by: Milan Verespej <m.verespej@partner.samsung.com>
  - Improve download of rpm

    Issue-ID: OOM-1803

    Change-Id: I8a6df03a5ede68968e9ccdf8d4de3f9f17d91963
    Signed-off-by: Milan Verespej <m.verespej@partner.samsung.com>
  - Improve download of git repositories

    Issue-ID: OOM-1803

    Change-Id: I167f66f3cb6b96d9e21c5ffbd0cf0eb33ef4932e
    Signed-off-by: Milan Verespej <m.verespej@partner.samsung.com>
  - Improve docker image download script

    This is part of the series of changes that will improve
    download scripts.

    Issue-ID: OOM-1803

    Change-Id: I6606762f8e05c25132257e5612997418a9d6d701
    Signed-off-by: Milan Verespej <m.verespej@partner.samsung.com>