QA:Testcase Virtualization libvirt save and restore with svirt

How to test

1. Make sure the selinux is enforcing by checking

   # getenforce

2. Start a VM

   # virsh start demo

3. In guest, issue some command, such as: ls, or ifconfig
4. Save the running vm, and check the context of the save file

   # virsh save demo[name,ID,UUID] /tmp/demo.save

5. Restore the vm

   # virsh restore /tmp/demo.save

Expected Results

1. Step#1: Enforcing
2. Step#2: VM is started successfully
3. Step#3: the commands run as expected and remember the outputs for step#5
4. Step#4: Save should be finished successfully, Domain demo saved to /tmp/demo.save

   # ll -Z /tmp/demo.save

   -rw-------. root root system_u:object_r:svirt_image_t:s0:c475,c520 /tmp/demo.save

5. Step#5: vm is restored successfully, and the output of the step3 still is seen.