JIRA HPCC-12093 added 'kill_process_by_name()', 'kill_component()', clea...

Kill init_<component>
Kill component processes
@mckellyln I tested it out this morning on a multinode system (ubuntu 14.04) with multiple slaves per node.  Thormaster_myth does a really solid job of keeping track of it's children across the cluster and acting appropriately when one of them either dies or is killed, as well as removing any old slaves if thormaster_myth restarts.  So thorslave_lcr is uneccessary so I took it out.  Thormaster_myth is necessary because sometimes (if an admin) does a kill -9 on init_thor we run into an issue where start_thor, run_thor, and thormaster_myth are all still living, so we want to insure it gets cleaned up (after run_thor, which seems to be a watchdog for thormaster_myth.)