Simplification in callbacks
Integrated the Remotecall object into the Invocation to simplify +
reduce object litter.
Removed remotecallback
Fixed bug when callback runs into a shutdown asyn executor
Merged the invocation runnable directly into the invocation
The BasicInvocationFuture is now relaxed when the set is called multiple times. So
no more exception throwing.
Minor javadoc improvement
Removed commented out code
Enabled a metric to the BasicOpService
Removed jruby import
Minor cleanup
Processed review comments
Merge pull request #2159 from pveentjer/operation-service-cleanup

Operation service cleanup