[ARTEMIS-2665] AMQP Shared Non Durable queues are not being created same as CORE

Previously, the broker did not automatically delete a shared, non-durable queue created by an AMQP producer if the queue had at least one message in it, even if the queue had no connected consumers. This issue is resolved. The broker now marks a shared, non-durable AMQP queue as _temporary_, in the same way that it does for the Core protocol. This means that the broker automatically deletes such a queue when there are no connected consumers.