unit-test: delete what ioutil.TempFile creates

ioutil.TempFile creates a new temporary file in the directory dir.
It is the caller's responsibility to remove the file
when no longer needed.

Fixes: #2398

Signed-off-by: Penny Zheng <penny.zheng@arm.com>

virtcontainers/acrn_arch_base_test.go

@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net"
+	"os"
 	"path/filepath"
 	"testing"
 
@@ -128,6 +129,7 @@ func TestAcrnArchBaseAppendImage(t *testing.T) {
 
 	image, err := ioutil.TempFile("", "img")
 	assert.NoError(err)
+	defer os.Remove(image.Name())
 	err = image.Close()
 	assert.NoError(err)
 

virtcontainers/qemu_arch_base_test.go

@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net"
+	"os"
 	"path/filepath"
 	"testing"
 
@@ -287,6 +288,7 @@ func TestQemuArchBaseAppendImage(t *testing.T) {
 
 	image, err := ioutil.TempFile("", "img")
 	assert.NoError(err)
+	defer os.Remove(image.Name())
 	err = image.Close()
 	assert.NoError(err)