Replace fmt.Errorf() with errors.Errorf() in the cli

Signed-off-by: Daniel Nephin <dnephin@docker.com>

command/swarm/init_test.go

@@ -11,6 +11,7 @@ import (
 	"github.com/docker/docker/cli/internal/test"
 	"github.com/docker/docker/pkg/testutil/assert"
 	"github.com/docker/docker/pkg/testutil/golden"
+	"github.com/pkg/errors"
 )
 
 func TestSwarmInitErrorOnAPIFailure(t *testing.T) {
@@ -26,28 +27,28 @@ func TestSwarmInitErrorOnAPIFailure(t *testing.T) {
 		{
 			name: "init-failed",
 			swarmInitFunc: func() (string, error) {
-				return "", fmt.Errorf("error initializing the swarm")
+				return "", errors.Errorf("error initializing the swarm")
 			},
 			expectedError: "error initializing the swarm",
 		},
 		{
 			name: "init-failed-with-ip-choice",
 			swarmInitFunc: func() (string, error) {
-				return "", fmt.Errorf("could not choose an IP address to advertise")
+				return "", errors.Errorf("could not choose an IP address to advertise")
 			},
 			expectedError: "could not choose an IP address to advertise - specify one with --advertise-addr",
 		},
 		{
 			name: "swarm-inspect-after-init-failed",
 			swarmInspectFunc: func() (swarm.Swarm, error) {
-				return swarm.Swarm{}, fmt.Errorf("error inspecting the swarm")
+				return swarm.Swarm{}, errors.Errorf("error inspecting the swarm")
 			},
 			expectedError: "error inspecting the swarm",
 		},
 		{
 			name: "node-inspect-after-init-failed",
 			nodeInspectFunc: func() (swarm.Node, []byte, error) {
-				return swarm.Node{}, []byte{}, fmt.Errorf("error inspecting the node")
+				return swarm.Node{}, []byte{}, errors.Errorf("error inspecting the node")
 			},
 			expectedError: "error inspecting the node",
 		},
@@ -57,7 +58,7 @@ func TestSwarmInitErrorOnAPIFailure(t *testing.T) {
 				flagAutolock: "true",
 			},
 			swarmGetUnlockKeyFunc: func() (types.SwarmUnlockKeyResponse, error) {
-				return types.SwarmUnlockKeyResponse{}, fmt.Errorf("error getting swarm unlock key")
+				return types.SwarmUnlockKeyResponse{}, errors.Errorf("error getting swarm unlock key")
 			},
 			expectedError: "could not fetch unlock key: error getting swarm unlock key",
 		},