Full write support for Geo record sets

This completes write support for Geo record sets in the Java interface.

Here's an example of how to create or replace one.

```java
allButBrazil =  filterValues(geoApi(zone).regions(), not(equalTo("Brazil")));

geoApi(zone).put(ResourceRecordSet.<CNAMEData> builder()
                                  .name("www.denominator.io.")
                                  .type("CNAME")
                                  .ttl(1800)
                                  .qualifier("US-West")
                                  .addProfile(Geo.create(allButBrazil))
                                  .add(CNAMEData.create("www-west.denominator.io.")).build());
```