Add start/stop test for plain old docker

Author: Priya Wadhwa

Diff for: test/integration/start_stop_delete_test.go

@@ -71,6 +71,9 @@ func TestStartStop(t *testing.T) {
 				"--disable-driver-mounts",
 				"--extra-config=kubeadm.ignore-preflight-errors=SystemVerification",
 			}},
+			{"docker", constants.DefaultKubernetesVersion, []string{
+				"--container-runtime=docker",
+			}},
 			{"embed-certs", constants.DefaultKubernetesVersion, []string{
 				"--embed-certs",
 			}},
@@ -135,6 +138,7 @@ func TestStartStop(t *testing.T) {
 				if strings.Contains(tc.name, "cni") {
 					t.Logf("WARNING: cni mode requires additional setup before pods can schedule :(")
 				} else {
+					fmt.Println("Wating for busybox and dashboard...")
 					if _, err := PodWait(ctx, t, profile, "default", "integration-test=busybox", Minutes(7)); err != nil {
 						t.Fatalf("failed waiting for pod 'busybox' post-stop-start: %v", err)
 					}