Merge PR #29906 into master

Merge PR #29906 into master

* refs/pull/29906/head:
	vstart_runner: name booleans for options differently
	qa/vstart_runner.py: add an option to remove old log
	qa/vstart_runner.py: make log initialization code reusable
	qa/vstart_runner.py: make printing of stdout of ps optional
	qa/vstart_runner.py: add timeout for vstart.sh and stop.sh
	qa/vstart_runner.py: add an option to teardown cluster

Reviewed-by: Jeff Layton <jlayton@redhat.com>