Update camel-core/src/main/java/org/apache/camel/management/DefaultManag...

...ementAgent.java

https://issues.apache.org/jira/browse/CAMEL-5127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

serviceUrl in JMX remote connection should use 0.0.0.0 instead of localhost

DEFAULT_HOST updated to 0.0.0.0 as requested by change request.

createMBeanServer() updated to remove code attempting to lookup hostname as we will always use 0.0.0.0 now

NB: Where multiple network cards exist, the utilisation of 0.0.0.0 may result in any network card being used.