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

Kill init_<component>
Kill component processes
it actually handles multiple thorslave_lcr's just fine (i'm testing on a single node system with 3 slaves atm) but I have found a bug in the process.  start_thor and run_thor get duplicated and the original process doesn't die off.