Setting JVM MetaspaceSize and MaxMetaspaceSize on JBoss EAP

Issue

• In JBoss EAP 7 and 8 there is the possibility to set Permgen value with a default tag parameter even though there's no more Permgen for Java 8 or later, but MetaspaceSize or MaxMetaspaceSize does not exists by default. For example, see the below the CLI options that are available for the write-attribute:

[domain@localhost:9990 /] /server-group=main-server-group/jvm=default:write-attribute(name=

agent-lib
agent-path             
env-classpath-ignored                
environment-variables  
heap-size              
java-agent             
java-home              
jvm-options            
launch-command         
max-heap-size          
max-permgen-size       
module-options         
permgen-size           
stack-size             
type 

• Need to configure JVM Metaspace in a JBoss EAP managed domain when no dedicated Metaspace field exists.