testCompareDomXML2XMLFiles: add parseFlags parameter

Allow testing XML parsing with different flags.

tests/bhyvexml2xmltest.c

@@ -33,7 +33,7 @@ testCompareXMLToXMLHelper(const void *data)
     ret = testCompareDomXML2XMLFiles(driver.caps, driver.xmlopt, xml_in,
                                      info->different ? xml_out : xml_in,
                                      false,
-                                     NULL, NULL);
+                                     NULL, NULL, 0);
 
  cleanup:
     VIR_FREE(xml_in);