Comment 38 for bug 1657348

Reviewed: https://review.openstack.org/436718
Committed: https://git.openstack.org/cgit/openstack/fuel-web/commit/?id=c89a8569db3f6bc4e244a8890f150f0b5c70eaea
Submitter: Jenkins
Branch: stable/newton

commit c89a8569db3f6bc4e244a8890f150f0b5c70eaea
Author: Dmitry Sutyagin <email address hidden>
Date: Mon Jan 23 15:48:31 2017 -0800

    Add limit, offset, order in collection GET

    Allow limiting the number of objects returned via GET
    by providing "limit"
    Example: api/notifications?limit=5

    Allow offseting (skipping N first records) via "offset"
    Example: api/notifications?offset=100

    Allow ordering of objects by providing "order_by"
    Example: api/notifications?order_by=-id

    Add helper functions/classes to:
    - get HTTP parameters (limit, offset, order_by)
    - get scoped collection query by applying 4 operations
      filter, order, offset, limit
    - set Conent-Range header if scope limits are present

    Make default NailgunCollection's GET utilize scoped query
    This makes default (parent) GET of child handlers support paging
    and ordering (overriden GET methods will not get this functionality
    automatically)
    NailgunCollection.GET is also an example of how to implement
    this new functionality.

    Helper functions/classes can be utilized in child handler methods
    to implement filters / ordering / paging

    Related-Bug: 1657348
    Change-Id: I7760465f70b3f69791e7a0c558a26e8ba55c934a
    (cherry picked from commit 03aaca2deeb062e962a81d16c2a75fb5fccfc265)