ServiceLauncher: Add SIGTERM handler, downgrade all registration failures to error logs, not application failure
Fix TestFailedRegionService to check for increment in count of failed nodes -and switch test to sending SIGTERM and not SIGSTOP -which is not deteced
BUG-12521 update specification, manpage and release notes with killcontainer
TestHBaseNodeFailure: failure injection in functional tests
Functional test of cluster restart
BUG-12521 functional tests set up to work in sequence -port assignments default to 0 unless stated
Merge branch 'feature/BUG-12521' into develop