duplicate address-setting gets lost

In setting file broker.xml, it is possible to register multiple address-setting blocks for the same match. But because these blocks are put in a Map (in org.apache.activemq.artemis.core.deployers.impl.parseAddressSettings()), any previous block with the same match will be effectively ignored.

This may also happen for some of the other named blocks.

My suggestion is to raise an error when configuration information is lost.