Missing Unique Constraint on Pool Attributes table

[Betsy Luzader]

There should be a unique constraint on the Pool Attributes table to prevent duplicates. The unique constraint should be:

UniqueConstraint('pool_id', 'key', 'value', name='unique_pool_attribute'),

because you can have multiple entries with the same pool_id and key.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/133837

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/133837
Committed: https://git.openstack.org/cgit/openstack/designate/commit/?id=46d3b4e8dff8092d79d5aa02ca92bad052d51691
Submitter: Jenkins
Branch: master

commit 46d3b4e8dff8092d79d5aa02ca92bad052d51691
Author: Betsy Luzader <email address hidden>
Date: Tue Nov 11 16:28:03 2014 -0600

      Missing Unique Constraint on Pool Attributes table

      This adds a UniqueConstraint on the pool_attributes
      table for the pool_id, key and value

      Closes-Bug:#1391212

    Change-Id: I33c3678343a406a73a3ebd1cc0394eea801dc258