3de3f61 move tag/package owners to separate table

Authored and Committed by tkopecek 4 years ago
    move tag/package owners to separate table
    
    Changing owner is triggering repo regeneration in kojira. As it is
    something which doesn't have any effect on repodata, let's put it to
    separate table and let kojira ignore these changes.
    
    Fixes: https://pagure.io/koji/issue/956
    
        
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