Spring batch param migration (#3124)

* small change to support change to string length of spring batch execution parameters

* added comment to indicate function is empty on purpose

* added javadoc for this method to note it's for overriding purpose

Co-authored-by: Steven Li <steven@smilecdr.com>

hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/migrate/tasks/HapiFhirJpaMigrationTasks.java

@@ -75,6 +75,18 @@ public class HapiFhirJpaMigrationTasks extends BaseMigrationTasks<VersionEnum> {
 		init530();
 		init540(); // 20210218 - 20210520
 		init550(); // 20210520 -
+		init560(); // 20211027 -
+	}
+
+	private void init560() {
+		init560_20211027();
+	}
+
+	/**
+	 * Mirgation for the batch job parameter size change. Overriding purposes only.
+	 */
+	protected void init560_20211027() {
+		// nothing
 	}
 
 	private void init550() {