Add -show-application-info option to yarn resourcemanager CLI

If an application has failed, the admin can purge it with -remove-application-from-state-store, but she has no information at that time about what the offending job is. This JIRA proposes to add a -show-application-info switch to the resourcemanager CLI that will print the application information without needing a running RM so that the admin can make an informed decision.