Fix TestTaskRunStatus test to run on s390x

TestTaskRunStatus test fails for s390x architecture because busybox
image in the code is specified with concrete SHA. SHA is unique for
each image and as a result for s390x case the amd64 image with the SHA
is pulled. Test failed.

Adding s390x specific SHA to s390x build solves this problem.

Signed-off-by: Yulia Gaponenko <yulia.gaponenko1@de.ibm.com>

test/taskrun_test.go

@@ -19,6 +19,7 @@ limitations under the License.
 package test
 
 import (
+	"runtime"
 	"strings"
 	"testing"
 
@@ -126,13 +127,17 @@ func TestTaskRunStatus(t *testing.T) {
 	taskRunName := "status-taskrun"
 
 	fqImageName := "busybox@sha256:895ab622e92e18d6b461d671081757af7dbaa3b00e3e28e12505af7817f73649"
+	if runtime.GOARCH == "s390x" {
+		fqImageName = "busybox@sha256:4f47c01fa91355af2865ac10fef5bf6ec9c7f42ad2321377c21e844427972977"
+	}
+
 	t.Logf("Creating Task and TaskRun in namespace %s", namespace)
 	task := &v1beta1.Task{
 		ObjectMeta: metav1.ObjectMeta{Name: "status-task", Namespace: namespace},
 		Spec: v1beta1.TaskSpec{
 			// This was the digest of the latest tag as of 8/12/2019
 			Steps: []v1beta1.Step{{Container: corev1.Container{
-				Image:   "busybox@sha256:895ab622e92e18d6b461d671081757af7dbaa3b00e3e28e12505af7817f73649",
+				Image:   fqImageName,
 				Command: []string{"/bin/sh"},
 				Args:    []string{"-c", "echo hello"},
 			}}},