Add JPA annotations to class Registrar (#430)

* Add JPA annotations to class Registrar

* Use array for Java list

* Exclude parent field

* Use 3 columns for address and use text for enum

* Use EnumParameter and 3 properties in Address

* Rename columns and rebase on HEAD

db/src/main/resources/sql/flyway/V16__create_registrar.sql

@@ -0,0 +1,65 @@
+-- Copyright 2020 The Nomulus Authors. All Rights Reserved.
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+
+create table "Registrar" (
+       client_id text not null,
+        allowed_tlds text[],
+        billing_account_map hstore,
+        billing_identifier int8,
+        block_premium_names boolean not null,
+        client_certificate text,
+        client_certificate_hash text,
+        contacts_require_syncing boolean not null,
+        creation_time timestamptz,
+        drive_folder_id text,
+        email_address text,
+        failover_client_certificate text,
+        failover_client_certificate_hash text,
+        fax_number text,
+        iana_identifier int8,
+        icann_referral_email text,
+        i18n_address_city text,
+        i18n_address_country_code text,
+        i18n_address_state text,
+        i18n_address_street_line1 text,
+        i18n_address_street_line2 text,
+        i18n_address_street_line3 text,
+        i18n_address_zip text,
+        ip_address_whitelist text[],
+        last_certificate_update_time timestamptz,
+        last_update_time timestamptz,
+        localized_address_city text,
+        localized_address_country_code text,
+        localized_address_state text,
+        localized_address_street_line1 text,
+        localized_address_street_line2 text,
+        localized_address_street_line3 text,
+        localized_address_zip text,
+        password_hash text,
+        phone_number text,
+        phone_passcode text,
+        po_number text,
+        rdap_base_urls text[],
+        registrar_name text not null,
+        registry_lock_allowed boolean not null,
+        password_salt text,
+        state text,
+        type text not null,
+        url text,
+        whois_server text,
+        primary key (client_id)
+    );
+
+create index registrar_name_idx on "Registrar" (registrar_name);
+create index registrar_iana_identifier_idx on "Registrar" (iana_identifier);