ISPN-4825 Add JMX/DMR operation to change the availability mode of the partition

https://issues.jboss.org/browse/ISPN-4825

Add availability change operation to LocalTopologyManager, AdvancedCache,
and the Cache JMX MBean.
Move the CacheAvailability DMR attribute from the metrics to the resources and make it writable
one question: the ```testName``` shouldn't be ```statetransfer.CacheAvailabilityJmxTest```? or maybe move the test to the ```jmx``` package?