[Bug 1383502] [NEW] Tag Catalog Support For Metadata Definitions

[Wayne]

Public bug reported:

A challenge with using OpenStack is discovering, sharing, and correlating 
tags across services and different types of resources. We believe this	
affects both end users and administrators.

A catalog of possible tags that can be used to help ensure tag name consistency 
across users, resource types, and services. So, when a user goes to apply a tag	
on a resource, they will be able to either create new tags or choose from tags	
that have been used elsewhere in the system on different types of resources.	

The following DB schema is the initial suggested schema. We will improve and 
take comments during code review. Constraints not shown for readability.
CREATE TABLE `metadef_tags` ( 
    `id`                          int(11) NOT NULL AUTO_INCREMENT, 
    `namespace_id`  int(11) NOT NULL, 
    `name`                   varchar(80) NOT NULL, 
    `created_at`         timestamp NOT NULL, 
    `updated_at`       timestamp
)

CREATE TABLE `metadef_tag_parents` ( 
    `child_tag_id`           int(11) NOT NULL, 
    `parent_tag_id`       int(11) NOT NULL	
)

** Affects: glance (Ubuntu)
     Importance: Undecided
     Assignee: Wayne (wayne-okuma)
         Status: New

** Changed in: glance (Ubuntu)
     Assignee: (unassigned) => Wayne (wayne-okuma)

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https://bugs.launchpad.net/bugs/1383502

Title:
  Tag Catalog Support For Metadata Definitions

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