Set default whitelist value for new config

Author: sosedoff

config.go

@@ -41,6 +41,7 @@ func NewConfig() *Config {
 	cfg.RunDuration = time.Second * 10
 	cfg.ThrottleQuota = 5
 	cfg.ThrottleConcurrency = 1
+	cfg.ThrottleWhitelist = []string{}
 	cfg.NetworkDisabled = false
 	cfg.MemoryLimit = 67108864
 	cfg.Pools = []PoolConfig{}