../testbed/testsuite/tbtest -full run tbdb frontend testbed chris \
	"10 pc 16 shark"

it will then reserve 10 pcs and 16 sharks (or fail) and then run all the
tests using those nodes.  This doesn't quite work yet.  It's awaiting an
update of tmcc/tmcd to have nodes look at the other DB.

Also made it a little more forgiving about the test DB being left around.