tests: Fix tests to newContainer parameter changes

Have changed newContainer's contConfig parameter from value to reference
due to sandbox's ContainerConfig and Container's ContainerConfig not sync.

Fixes: kata-containers#2129

Signed-off-by: Wang Liang <wangliangzz@inspur.com>

virtcontainers/sandbox_test.go

@@ -621,7 +621,7 @@ func TestSandboxGetContainer(t *testing.T) {
 
 	contID := "999"
 	contConfig := newTestContainerConfigNoop(contID)
-	nc, err := newContainer(p, contConfig)
+	nc, err := newContainer(p, &contConfig)
 	assert.NoError(err)
 
 	err = p.addContainer(nc)