Allow an optional property on Pop to indicate the availability zone
Interxion has an A and B network and we want to expose this explicitly; today, implicitly it can can be inferred from the identifier for a Pop, for instance
Pop "id": "LON1-A" is a Pop in LON1 on network A Pop "id": "LON2-B" is a Pop in LON2 on network B Pop "id": "AMS7-A" is a Pop in AMS7 on network A Pop "id": "AMS5-B" is a Pop in AMS5 on network B
This request is to add an optional property on Pop so that the availability zone can be explicitly interrogated.