Add "unreachable_or_addresses" to "fields" parameter.

CHANGELOG.md

+# Changes in version 4.3-1.7.1 - 2017-11-17
+
+ * Minor changes
+   - Include "unreachable_or_addresses" as accepted value in the
+     "fields" parameter.
+
+
 # Changes in version 4.3-1.7.0 - 2017-11-17
 
  * Medium changes

src/main/java/org/torproject/onionoo/server/ResponseBuilder.java

@@ -339,6 +339,9 @@ public class ResponseBuilder {
             dd.setAllegedFamily(detailsDocument.getAllegedFamily());
           } else if (field.equals("indirect_family")) {
             dd.setIndirectFamily(detailsDocument.getIndirectFamily());
+          } else if (field.equals("unreachable_or_addresses")) {
+            dd.setUnreachableOrAddresses(
+                detailsDocument.getUnreachableOrAddresses());
           }
         }
         /* Don't escape HTML characters, like < and >, contained in