Use random node to load cluster slots

internal/hashtag/hashtag.go

@@ -1,8 +1,9 @@
 package hashtag
 
 import (
-	"math/rand"
 	"strings"
+
+	"golang.org/x/exp/rand"
 )
 
 const slotNumber = 16384

internal/hashtag/hashtag_test.go

@@ -1,11 +1,11 @@
 package hashtag
 
 import (
-	"math/rand"
 	"testing"
 
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+	"golang.org/x/exp/rand"
 )
 
 func TestGinkgoSuite(t *testing.T) {

internal/internal.go

@@ -1,8 +1,9 @@
 package internal
 
 import (
-	"math/rand"
 	"time"
+
+	"golang.org/x/exp/rand"
 )
 
 // Retry backoff with jitter sleep to prevent overloaded conditions during intervals