Add integration test

This is behind a build flag. Usage:
    go test -tags=integration ./...

pkg/driver/kubernetes_integration_test.go

@@ -0,0 +1,62 @@
+// +build integration
+
+package driver
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/deislabs/cnab-go/driver"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestKubernetesRun(t *testing.T) {
+	namespace := "default"
+	k := &KubernetesDriver{}
+	k.SetConfig(map[string]string{
+		"KUBE_NAMESPACE": namespace,
+	})
+	k.ActiveDeadlineSeconds = 60
+
+	cases := []struct {
+		name   string
+		op     *driver.Operation
+		output string
+		err    error
+	}{
+		{
+			name: "install",
+			op: &driver.Operation{
+				Installation: "example",
+				Action:       "install",
+				Image:        "cnab/helloworld:latest",
+				Environment: map[string]string{
+					"PORT": "3000",
+				},
+			},
+			output: "Port parameter was set to 3000\nInstall action\nAction install complete for example\n",
+			err:    nil,
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			var output bytes.Buffer
+			tc.op.Out = &output
+			if tc.op.Environment == nil {
+				tc.op.Environment = map[string]string{}
+			}
+			tc.op.Environment["CNAB_ACTION"] = tc.op.Action
+			tc.op.Environment["CNAB_INSTALLATION_NAME"] = tc.op.Installation
+
+			err := k.Run(tc.op)
+
+			if tc.err != nil {
+				assert.EqualError(t, err, tc.err.Error())
+			} else {
+				assert.NoError(t, err)
+			}
+			assert.Equal(t, tc.output, output.String())
+		})
+	}
+}