Add missing description tag

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

provider/eureka/eureka.go

@@ -19,8 +19,8 @@ import (
 // Provider holds configuration of the Provider provider.
 type Provider struct {
 	provider.BaseProvider `mapstructure:",squash"`
-	Endpoint              string
-	Delay                 string
+	Endpoint              string `description:"Eureka server endpoint"`
+	Delay                 string `description:"Override default configuration time between refresh"`
 }
 
 // Provide allows the eureka provider to provide configurations to traefik

provider/marathon/marathon.go

@@ -45,14 +45,14 @@ type Provider struct {
 	DialerTimeout           flaeg.Duration      `description:"Set a non-default connection timeout for Marathon"`
 	KeepAlive               flaeg.Duration      `description:"Set a non-default TCP Keep Alive time in seconds"`
 	ForceTaskHostname       bool                `description:"Force to use the task's hostname."`
-	Basic                   *Basic
+	Basic                   *Basic              `description:"Enable basic authentication"`
 	marathonClient          marathon.Marathon
 }
 
 // Basic holds basic authentication specific configurations
 type Basic struct {
-	HTTPBasicAuthUser string
-	HTTPBasicPassword string
+	HTTPBasicAuthUser string `description:"Basic authentication User"`
+	HTTPBasicPassword string `description:"Basic authentication Password"`
 }
 
 type lightMarathonClient interface {