New-ALZEnvironment presents a very long list of Locales

[lovelysandwich]

...which are far too many, and several of the locales are incorrect (despite coming from the Get-AzLocation)

1. We shouldn't display the entire list of locations.
2. We should remove incorrect locations from the list.

Expected Behavior

1. No locations are listed in the Locations Query.
2. The user input location is still validated against the list of locations.
3. Invalid locations are removed from the list.
4. We need to go back to a dynamic list of locations (hardcoded again since we moved to JSON)