Add support for Postgres range partition DDL plus refactor xsd definitions that had got out of sync (#1465)

* Add partition meta mapping

* Fix to allow schema prefix on select dynamic formula

* Add partition meta mapping

* Migration XSD Update

* Fix to allow schema prefix on select dynamic formula

* Bump ebean-migration to 11.8.1

src/main/java/io/ebeaninternal/dbmigration/migration/AddColumn.java

@@ -12,9 +12,9 @@ import java.util.List;
 
 /**
  * <p>Java class for anonymous complex type.
- * <p>
+ *
  * <p>The following schema fragment specifies the expected content contained within this class.
- * <p>
+ *
  * <pre>
  * &lt;complexType>
  *   &lt;complexContent>
@@ -45,20 +45,20 @@ public class AddColumn {
 
   /**
    * Gets the value of the column property.
-   * <p>
+   *
    * <p>
    * This accessor method returns a reference to the live list,
    * not a snapshot. Therefore any modification you make to the
    * returned list will be present inside the JAXB object.
    * This is why there is not a <CODE>set</CODE> method for the column property.
-   * <p>
+   *
    * <p>
    * For example, to add a new item, do as follows:
    * <pre>
    *    getColumn().add(newItem);
    * </pre>
-   * <p>
-   * <p>
+   *
+   *
    * <p>
    * Objects of the following type(s) are allowed in the list
    * {@link Column }