Comment 2 for bug 1634115

Reviewed: https://review.openstack.org/387674
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=f87af91d90f8f1322e92f9bc4d198a83162bb118
Submitter: Jenkins
Branch: master

commit f87af91d90f8f1322e92f9bc4d198a83162bb118
Author: Pushkar Umaranikar <email address hidden>
Date: Mon Oct 17 20:42:43 2016 +0000

    Placement api: 404 response do not indicate what was not found

    Add informative messages to the 404 error response from
    nova/objects/resource_provider.py

    For the method _update_inventory_in_db() from resource_provider.py,
    gabbi test validation is not added since it is not being used and
    from the placement API you create an inventory but then call
    set_inventory or add_inventory on a resource_provider.

    Similar change, i.e. adding informative messages to 404 error can be
    done for api tests from inventory.yaml and usage.yaml

    It includes adding informative logging in code for 404 exceptions and
    adding gabbi tests for those.
    This can be done in follow up patch.

    Change-Id: If53f84ac5f7521e9926b97bdcce3cf77ec5b4ffd
    Closes-Bug: #1634115