Added a primary address to Zizi Retail

[danieltaylor-nz]

Added a primary address, because without it, the service ContactServices.get#PartyContactInfo returns nothing on demo data.

[jonesde]

This could be there just to have a Primary address for ZIRET, but what is the business context where it is needed? There are lots of services, not all demo data is meant to be used for all services, doing so wouldn't even make sense from business requirement or rational design perspectives.

[danieltaylor-nz]

I think you already saw this PR linked in #151 where I was trying to run the code and ContactServices.get#PartyContactInfo was returning nothing despite defaultToPrimaryPurpose being passed. While I expected that 'PostalOrder' would return nothing for the demo org, I expected to see values because of defaultToPrimaryPurpose.

I lost a bit of time discovering that the demo data had no 'primary address', as I had assumed that a primary address would exist given that it's treated as a default value.

I thought that one of the purposes of demo data was for developers to have a quick start for running/testing code. I also assume that the demo data should be the ideal data-set, i.e, default values are present. While not all services have to have relevant data, ContactServices.get#PartyContactInfo gets used a lot, so having working data could save other developers some time. There is no business case.