prefill does not work for the last url in connection-url when HA Datasource failover is enabled in EAP 6

Issue

<prefill> setting does not work for the last url in <connection-url> when HA Datasource failover is enabled like the following:

  <datasource jta="true" jndi-name="java:jboss/PostgresDS" pool-name="PostgresDS" enabled="true">
      <connection-url>jdbc:postgresql://node1:5432/exampledb|jdbc:postgresql://node2:5432/exampledb</connection-url>                                                                                                                                                                               
      <driver>postgresql</driver>
      <url-delimiter>|</url-delimiter>
      <pool>
          <min-pool-size>10</min-pool-size>
          <max-pool-size>10</max-pool-size>
          <prefill>true</prefill>
          <use-strict-min>true</use-strict-min>
      </pool>
      <security>
          <user-name>postgres</user-name>
          <password>password</password>
      </security>
      <validation>
          <valid-connection-checker class-name="org.jboss.jca.adapters.jdbc.extensions.postgres.PostgreSQLValidConnectionChecker"/>
          <exception-sorter class-name="org.jboss.jca.adapters.jdbc.extensions.postgres.PostgreSQLExceptionSorter"/>
      </validation>
  </datasource>