[Pod] Add disabled test for a unique constraint on normalized_name.
[Pod] Add disabled test for a unique constraint on normalized_name.

First we need to resolve the existing duplicates before we enable this.

Shawn-WangDapeng/trunk.cocoapods.org,billinghamj/trunk.cocoapods.org,CocoaPods/trunk.cocoapods.org,CocoaPods/trunk.cocoapods.org,Shawn-WangDapeng/trunk.cocoapods.org,k0nserv/trunk.cocoapods.org,billinghamj/trunk.cocoapods.org,k0nserv/trunk.cocoapods.org,k0nserv/trunk.cocoapods.org