move all imports to own domain

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

util/jitter/random.go

@@ -1,10 +1,10 @@
 // Package jitter provides a random jitter
-package jitter
+package jitter // import "go.unistack.org/micro/v3/util/jitter"
 
 import (
 	"time"
 
-	"github.com/unistack-org/micro/v3/util/rand"
+	"go.unistack.org/micro/v3/util/rand"
 )
 
 // Random returns a random time to jitter with max cap specified

util/jitter/ticker.go

@@ -3,7 +3,7 @@ package jitter
 import (
 	"time"
 
-	"github.com/unistack-org/micro/v3/util/rand"
+	"go.unistack.org/micro/v3/util/rand"
 )
 
 // Ticker is similar to time.Ticker but ticks at random intervals between