ARTEMIS-6286 Use concurrent map for MQTTStateManager instances - #6757

setTemporaryQueueNamespace(java.lang.String) in org.apache.activemq.artemis.core.config.Configuration has been deprecated and marked for removal

setMqttSessionStatePersistenceTimeout(long) in org.apache.activemq.artemis.core.config.Configuration has been deprecated and marked for removal

getMqttSessionStatePersistenceTimeout() in org.apache.activemq.artemis.core.config.Configuration has been deprecated and marked for removal

getLive() in org.apache.activemq.artemis.api.core.client.TopologyMember has been deprecated and marked for removal

non-varargs call of varargs method with inexact argument type for last parameter;

sun.misc.Unsafe is internal proprietary API and may be removed in a future release

sun.misc.Unsafe is internal proprietary API and may be removed in a future release

sun.misc.Unsafe is internal proprietary API and may be removed in a future release

sun.misc.Unsafe is internal proprietary API and may be removed in a future release