Use a different seed for random numbers each run

Without this, each run gets the same random numbers so all nodes are
racing to remove the deleted node.

prog/kube-utils/main.go

@@ -354,6 +354,7 @@ func main() {
 		ch := make(chan os.Signal)
 		signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM)
 		stopCh := make(chan struct{})
+		rand.Seed(time.Now().UnixNano())
 		registerForNodeUpdates(c, stopCh, nodeName, peerName)
 		<-ch
 		close(stopCh)

prog/kube-utils/peerlist_test.go

@@ -5,6 +5,7 @@ import (
 	"math/rand"
 	"sync"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/require"
 )
@@ -71,6 +72,7 @@ func doConcurrentIterations(iterations, concurrency int, f func(int)) {
 }
 
 func TestPeerListFuzz(t *testing.T) {
+	rand.Seed(time.Now().UnixNano())
 	const (
 		testIters   = 1000
 		maxNodes    = 100