Add routes priorities in providers

Signed-off-by: Emile Vauge <emile@vauge.com>

types/types.go

@@ -34,7 +34,7 @@ type CircuitBreaker struct {
 // Server holds server configuration.
 type Server struct {
 	URL    string `json:"url,omitempty"`
-	Weight int    `json:"weight,omitempty"`
+	Weight int    `json:"weight"`
 }
 
 // Route holds route configuration.
@@ -52,7 +52,7 @@ type Frontend struct {
 	Backend        string           `json:"backend,omitempty"`
 	Routes         map[string]Route `json:"routes,omitempty"`
 	PassHostHeader bool             `json:"passHostHeader,omitempty"`
-	Priority       int              `json:"priority,omitempty"`
+	Priority       int              `json:"priority"`
 }
 
 // LoadBalancerMethod holds the method of load balancing to use.