Update git submodules

Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to 8a89840c024dc6cb4097ec37d9659598d79b5dd3
  - Fix helm behavior

    When 'helm serve' is not running and helm is not listening on
    localhost:8879 then helm starts to delete everything...instead of
    aborting or doing something sensible...

    This commit fix this misbehavior: we abort

    Issue-ID: OOM-2074

    Change-Id: Icb4d25163012e4aedf5ec1598a4f20c738c04974
    Signed-off-by: Petr Ospalý <p.ospaly@partner.samsung.com>
  - Improve cleanup (--delete-all) usage

    It cleans all orphaned images and volumes on each kubernetes node:
        docker system prune --force --all --volumes

    Also it now fixes the requirement for an override file when
    '--clean-only' is used and it adds more kubernetes resource object to
    redeploy.

    + improve help description
    + add use_help to not print all help when not asked
    + fix function name: redeploy_component -> undeploy_component
    + fix messages on some systems by switching echo to printf
    + fix grep to not match (e.g.) onap-bars when onap-bar was requested
    + add trap and fix terminal colors on abort

    Issue-ID: OOM-2074

    Change-Id: I54958d6e97febbda461bfb68f3829b002e7200b4
    Signed-off-by: Petr Ospalý <p.ospaly@partner.samsung.com>
  - Remove deprecated flag

    This commit fixes this warning:
    Flag --include-uninitialized has been deprecated, The Initializers
    feature has been removed. This flag is now a no-op, and will be
    removed in v1.15

    + Fix whitespace in help

    Issue-ID: OOM-2074

    Change-Id: I23b1a5cbe10fc07ec9342119be1753402ef6e041
    Signed-off-by: Petr Ospalý <p.ospaly@partner.samsung.com>