qemu: Properly label FDs when restoring domain with static label

When saving domain with relabel=no, the file that gets created must have the
context set anyway.  That way restore can be successful without the need of
relabelling the file.
Signed-off-by: NShivaprasad G Bhat <sbhat@linux.vnet.ibm.com>

src/qemu/qemu_driver.c

@@ -2966,6 +2966,9 @@ qemuDomainSaveMemory(virQEMUDriverPtr driver,
     if (fd < 0)
         goto cleanup;
 
+    if (virSecurityManagerSetImageFDLabel(driver->securityManager, vm->def, fd) < 0)
+        goto cleanup;
+
     if (!(wrapperFd = virFileWrapperFdNew(&fd, path, wrapperFlags)))
         goto cleanup;