Migrate invoicing pipeline to read from Cloud SQL (#1220)

* Save entities to Cloud SQL for tests

* Fix merge conflict

* Filter out non-real registrars and non-invoicing TLDs

* Add 1 month filter

* Handle cancellations

* Add to pipeline

* Use database in pipeline

* fix formatting

* Add a full pipeline test

* Fix repo ids in tests

* Move query to separate file

* Remove unused variables

* Remove unnecessary debugging remnant

* Reformat sql file

* Add jpql issue description

* Use DateTimeUtils

* Fix license header year

* Fix SQL formatting

* Use regex pattern

* Fix string building

* Add test for makeCloudSqlQuery

* Add clarifying comment

common/src/main/java/google/registry/util/DateTimeUtils.java

@@ -100,6 +100,15 @@ public class DateTimeUtils {
     return ZonedDateTime.ofInstant(instant, ZoneId.of(dateTime.getZone().getID()).normalized());
   }
 
+  /**
+   * Converts a Joda {@link DateTime} object to an equivalent java.time {@link ZonedDateTime}
+   * object.
+   */
+  public static ZonedDateTime toZonedDateTime(DateTime dateTime, ZoneId zoneId) {
+    java.time.Instant instant = java.time.Instant.ofEpochMilli(dateTime.getMillis());
+    return ZonedDateTime.ofInstant(instant, zoneId);
+  }
+
   /**
    * Converts a java.time {@link ZonedDateTime} object to an equivalent Joda {@link DateTime}
    * object.