Address review comments

-Fix whitespace on imports
-Fix test case naming

Signed-off-by: Jack Baines <jack.baines@uk.ibm.com>

remotes/docker/fetcher.go

@@ -26,11 +26,10 @@ import (
 	"path"
 	"strings"
 
-	"github.com/docker/distribution/registry/api/errcode"
-
 	"github.com/containerd/containerd/errdefs"
 	"github.com/containerd/containerd/images"
 	"github.com/containerd/containerd/log"
+	"github.com/docker/distribution/registry/api/errcode"
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"

remotes/docker/fetcher_test.go

@@ -99,8 +99,8 @@ func TestFetcherOpen(t *testing.T) {
 	}
 }
 
-// New set of test to test new error cases
-func Test_dockerFetcher_open(t *testing.T) {
+// New set of tests to test new error cases
+func TestDockerFetcherOpen(t *testing.T) {
 	tests := []struct {
 		name                   string
 		mockedStatus           int