Fixed tests

- Bumped version in config file
- Removed unused function
- Ran dep ensure -update

Author: ricardorg79

Gopkg.lock

@@ -13,7 +13,7 @@
   ],
   "interface": {
     "socket": "linode.sock",
-    "types": [ "docker.volumedriver/1.0" ]
+    "types": [ "docker.volumedriver/1.1" ]
   },
   "linux": {
     "allowAllDevices": true,

config.json

@@ -93,16 +93,6 @@ func cfgInt(name string, def int, desc string) *int {
 	return flag.Int(name, newDef, desc)
 }
 
-func cfgBool(name string, def bool, desc string) *bool {
-	newDef := def
-	if val, found := getEnv(name); found {
-		if b, err := strconv.ParseBool(val); err == nil {
-			newDef = b
-		}
-	}
-	return flag.Bool(name, newDef, desc)
-}
-
 func getEnv(name string) (string, bool) {
 	if val, found := os.LookupEnv(name); found {
 		return val, true