Description of problem: 
Executing operations on some AS7 plugin subsystems leads to an exception.

How reproducible:
Every time.

Steps to Reproduce:
1. Add an AS7 server to the inventory
2. Try to execute Set Root Logger on logging subsystem
  
Actual results:
java.lang.Exception: Operation name did not contain a ':'
	at org.rhq.core.pc.operation.OperationInvocation.run(OperationInvocation.java:278)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)


Expected results:
The operation completes successfully and the result returned.

Additional info:
The steps to reproduce use logging subsystem as an example; however, other subsystems with operations have the same problem. There are some subsystems with custom code for operation execution that are not affected by this defect.