var isUnconfiguring = flag.Bool("unconfigure", false, "remove topology")
var isVppDebug = flag.Bool("debug", false, "attach gdb to vpp")
var nConfiguredCpus = flag.Int("cpus", 1, "number of CPUs assigned to vpp")
+var vppSourceFileDir = flag.String("vppsrc", "", "vpp source file directory")
type HstSuite struct {
suite.Suite