soft_delete instance_type_projects in instance_type_destroy

[Boris Pavlovic]

We should soft_delete not only corresponding instance_type_extra_specs but also instance_type_projects.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/27410

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/27410
Committed: http://github.com/openstack/nova/commit/481d4a767e324e956af4afcb510eac802a9efa7a
Submitter: Jenkins
Branch: master

commit 481d4a767e324e956af4afcb510eac802a9efa7a
Author: Boris Pavlovic <email address hidden>
Date: Wed Apr 24 00:41:42 2013 +0400

    Fix bug in db.instance_type_destroy

    Fix db.instance_type_destroy()
    Corresponding instance_type_projects weren't deleted

    Fix db.instance_type_acces_get_by_flavor_id method
    Return [] list if there is no such instance_type
    instead of AttributeError

    Fixes bug 1172153

    Change-Id: Ib1a9a23aa6e26711c198bf4a5059797044c44426