Conform to RDAP Response Profile 15feb19

This is only about the Response Profile, not the Technical Implementation guide.

The Response Profile can be found at https://www.icann.org/en/system/files/files/rdap-response-profile-15feb19-en.pdf

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=250277559

java/google/registry/rdap/RdapNameserverAction.java

@@ -67,6 +67,6 @@ public class RdapNameserverAction extends RdapActionBase {
     if (!shouldBeVisible(hostResource)) {
       throw new NotFoundException(pathSearchString + " not found");
     }
-    return rdapJsonFormatter.makeRdapJsonForHost(hostResource.get(), OutputDataType.FULL);
+    return rdapJsonFormatter.createRdapNameserver(hostResource.get(), OutputDataType.FULL);
   }
 }