initialize block delay to its minimum value of 1

lotus-soup/main.go

@@ -4,6 +4,8 @@ import (
 	"github.com/testground/sdk-go/run"
 
 	"github.com/filecoin-project/oni/lotus-soup/testkit"
+
+	"github.com/filecoin-project/lotus/build"
 )
 
 var cases = map[string]interface{}{
@@ -12,6 +14,10 @@ var cases = map[string]interface{}{
 	"drand-halting":     testkit.WrapTestEnvironment(dealsE2E),
 }
 
+func init() {
+	build.BlockDelaySecs = 1
+}
+
 func main() {
 	run.InvokeMap(cases)
 }