This makes it correctly wait until the bdevperf test has started
running prior to starting the sleep to allow I/O to begin.
Change-Id: Ia6c004ede1854e836479dd3a0707a91551f954bc
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/433359
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>