Change download test to use unsupported preload version

So that we can still make sure that images are being pulled properly.

Also, remove the check for the kic base image. Right now, it isn't working, and I'm working on a fix in another PR.

test/integration/aaa_download_only_test.go

@@ -54,8 +54,7 @@ func TestDownloadOnly(t *testing.T) {
 	t.Run("group", func(t *testing.T) {
 		versions := []string{
 			constants.OldestKubernetesVersion,
-			constants.DefaultKubernetesVersion,
-			constants.NewestKubernetesVersion,
+			"v1.12.0",
 		}
 		for _, v := range versions {
 			t.Run(v, func(t *testing.T) {
@@ -197,15 +196,6 @@ func TestDownloadOnlyDocker(t *testing.T) {
 	if string(remoteChecksum) != string(checksum[:]) {
 		t.Errorf("checksum of %s does not match remote checksum (%s != %s)", tarball, string(remoteChecksum), string(checksum[:]))
 	}
-
-	// Make sure this image exists in the docker daemon
-	ref, err := name.ParseReference(kic.BaseImage)
-	if err != nil {
-		t.Errorf("parsing reference failed: %v", err)
-	}
-	if _, err := daemon.Image(ref); err != nil {
-		t.Errorf("expected image does not exist in local daemon: %v", err)
-	}
 }
 
 func runningDockerDriver(startArgs []string) bool {