RDAP: Add link to static TOS page

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=219332975

java/google/registry/config/RegistryConfigSettings.java

@@ -88,6 +88,7 @@ public class RegistryConfigSettings {
     public String reservedTermsExportDisclaimer;
     public String whoisDisclaimer;
     public String rdapTos;
+    public String rdapTosStaticUrl;
     public String spec11EmailBodyTemplate;
   }