CompoundLaunchedService: compound with a base implementation of the ServiceLauncher interface; move HoyaAM to it
Prepare HoyaClient for reparenting; HoyaYarnClientImpl is extended YarnClientImpl to contain
HoyaClient moves to CompoundLaunchedService; YarnClientImpl is just a child service. But: some delegated methods had to be exposed for testing
SecurityCheckerService: a service that validates the security settings in the conf against that of the process in its serviceInit() operation
Move a lot of the pure YARN operations to HoyaYarnClientImpl; pull some general service launcher ops up to the parent
Move Hoya RPC ops into HoyaClusterOperations class
minor hoya client src cleanup
Merge branch 'feature/BUG-10125' into develop
Merge branch 'develop' of github.com:hortonworks/hoya into develop

# By tedyu
# Via tedyu
* 'develop' of github.com:hortonworks/hoya:
  BUG-10736 switch Hoya to using Accumulo 1.5.0