RDAP: Add boilerplate entries required by ICANN RDAP Profile

The ICANN RDAP Profile (dated 3 December 2015) requires certain boilerplate entries at the top level of the JSON object. Specifically:

1.4.4. The terms of service of the RDAP service MUST be specified in the
notices object in the topmost JSON object of the response. The notices
object MUST contain a links object [RFC7483]. The links object MUST
contain an URL of the contracted party providing the RDAP service.

1.4.10. An RDAP response MUST contain a remarks member with a description
containing the string “This response conforms to the RDAP Operational
Profile for gTLD Registries and Registrars version 1.0”.

1.5.18. A domain name RDAP response MUST contain a remarks member with
a title “EPP Status Codes”, a description containing the string “For
more information on domain status codes, please visit
https://icann.org/epp” and a links member with the
https://icann.org/epp URL.

1.5.20. A domain name RDAP response MUST contain a remarks member with
a title “Whois Inaccuracy Complaint Form”, a description containing
the string “URL of the ICANN Whois Inaccuracy Complaint Form:
https://www.icann.org/wicf” and a links member with the
https://www.icann.org/wicf URL.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=116389950

javatests/com/google/domain/registry/rdap/RdapDomainSearchActionTest.java

@@ -210,6 +210,8 @@ public class RdapDomainSearchActionTest {
     ImmutableMap.Builder<String, Object> builder = new ImmutableMap.Builder<>();
     builder.put("domainSearchResults", ImmutableList.of(obj));
     builder.put("rdapConformance", ImmutableList.of("rdap_level_0"));
+    RdapTestHelper.addTermsOfServiceNotice(builder, "https://example.com/rdap/");
+    RdapTestHelper.addDomainBoilerplateRemarks(builder);
     return builder.build();
   }