Jolokia must be secured by default

After ISPN-7599 we can read and change JMX attributes via rest.

Jolokia is allowing to change the MBean attribute using the GET HTTP verb like:

http://localhost:8778/jolokia/write/java.lang:type=Memory/Verbose/true
http://127.0.0.1:8778/jolokia/write/jboss.datagrid-infinispan:component=Configuration,manager="local",name="namedCache(local)",type=Cache/evictionSize/10

And also, all other attributes that are writable.

Our intention here is block this behavior by default.

Allow only request that comes from localhost, using POST HTTP verb and blocking all commands by default.

Jolokia has a XML security policy that can be created to handle this.

More info here