CAMEL-6199: Fixed camel-jms consumer to remove privte thread pools used by listener container, when the consumer is stopped. For example when people add and remove routes at runtime.

git-svn-id: https://svn.apache.org/repos/asf/camel/branches/camel-2.10.x@1459721 13f79535-47bb-0310-9956-ffa450edef68