v3 refactor (#1868)

* Move to v3

Co-authored-by: Ben Toogood <bentoogood@gmail.com>

registry/etcd/etcd.go

@@ -17,8 +17,8 @@ import (
 	"github.com/coreos/etcd/clientv3"
 	"github.com/coreos/etcd/etcdserver/api/v3rpc/rpctypes"
 	"github.com/coreos/etcd/mvcc/mvccpb"
-	"github.com/micro/go-micro/v2/logger"
-	"github.com/micro/go-micro/v2/registry"
+	"github.com/micro/go-micro/v3/logger"
+	"github.com/micro/go-micro/v3/registry"
 	hash "github.com/mitchellh/hashstructure"
 	"go.uber.org/zap"
 )

registry/etcd/options.go

@@ -3,7 +3,7 @@ package etcd
 import (
 	"context"
 
-	"github.com/micro/go-micro/v2/registry"
+	"github.com/micro/go-micro/v3/registry"
 	"go.uber.org/zap"
 )
 

registry/etcd/watcher.go

@@ -6,7 +6,7 @@ import (
 	"time"
 
 	"github.com/coreos/etcd/clientv3"
-	"github.com/micro/go-micro/v2/registry"
+	"github.com/micro/go-micro/v3/registry"
 )
 
 type etcdWatcher struct {