Increases virtual site dfw09 probability to 1.0 (#140)

Since physical site dfw05 was retired, the remaining dfw sites have
become overloaded, especially by periodic spike traffic. Giving the
virtual dfw site full probability will hopefully help alleviate some of
the traffic issues to the remaining physical sites. We will also add
additional VMs to dfw09.

Author: nkinkade

static/configs.go

@@ -87,7 +87,7 @@ var SiteProbability = map[string]float64{
 	"chs01": 1.0, // virtual site
 	"cmh01": 1.0, // virtual site
 	"del03": 0.3, // virtual site
-	"dfw09": 0.3, // virtual site
+	"dfw09": 1.0, // virtual site
 	"fra07": 1.0, // virtual site
 	"gru05": 1.0, // virtual site
 	"hel01": 1.0, // virtual site