bump gotest.tools v3.0.1 for compatibility with Go 1.14

full diff: https://github.com/gotestyourself/gotest.tools/compare/v2.3.0...v3.0.1

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

cli/context/kubernetes/endpoint_test.go

@@ -7,7 +7,7 @@ import (
 
 	"github.com/docker/cli/cli/context"
 	"github.com/docker/cli/cli/context/store"
-	"gotest.tools/assert"
+	"gotest.tools/v3/assert"
 	"k8s.io/client-go/tools/clientcmd"
 	clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
 )

cli/context/kubernetes/load_test.go

@@ -6,8 +6,8 @@ import (
 	"github.com/docker/cli/cli/command"
 	"github.com/docker/cli/cli/config/configfile"
 	cliflags "github.com/docker/cli/cli/flags"
-	"gotest.tools/assert"
-	"gotest.tools/env"
+	"gotest.tools/v3/assert"
+	"gotest.tools/v3/env"
 )
 
 func TestDefaultContextInitializer(t *testing.T) {

cli/context/store/io_utils_test.go

@@ -5,7 +5,7 @@ import (
 	"strings"
 	"testing"
 
-	"gotest.tools/assert"
+	"gotest.tools/v3/assert"
 )
 
 func TestLimitReaderReadAll(t *testing.T) {

cli/context/store/metadata_test.go

@@ -6,8 +6,8 @@ import (
 	"path/filepath"
 	"testing"
 
-	"gotest.tools/assert"
-	"gotest.tools/assert/cmp"
+	"gotest.tools/v3/assert"
+	"gotest.tools/v3/assert/cmp"
 )
 
 func testMetadata(name string) Metadata {

cli/context/store/store_test.go

@@ -13,7 +13,7 @@ import (
 	"path"
 	"testing"
 
-	"gotest.tools/assert"
+	"gotest.tools/v3/assert"
 )
 
 type endpoint struct {

cli/context/store/storeconfig_test.go

@@ -3,7 +3,7 @@ package store
 import (
 	"testing"
 
-	"gotest.tools/assert"
+	"gotest.tools/v3/assert"
 )
 
 type testCtx struct{}

cli/context/store/tlsstore_test.go

@@ -5,7 +5,7 @@ import (
 	"os"
 	"testing"
 
-	"gotest.tools/assert"
+	"gotest.tools/v3/assert"
 )
 
 func TestTlsCreateUpdateGetRemove(t *testing.T) {