Ambari Shell improvements

There are a few new Ambari shell and client functionalities - this issue encapsulate them. To list a few of the enhancements:

• installation flash/progress bar
• tab completion for hostname/blueprint
• service start/stop
• auto assign for hosts to host group
• exit on finish at cluster creation
• command log name changed to ambari-log.ash instead of spring-log
• new blueprints added - warmup - lambda-architecture

There is a new dependency introduced: jackson-mapper-asl