Linting provider package

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

provider/provider.go

@@ -2,6 +2,9 @@ package provider
 
 import "github.com/emilevauge/traefik/types"
 
+// Provider defines methods of a provider.
 type Provider interface {
+	// Provide allows the provider to provide configurations to traefik
+	// using the given configuration channel.
 	Provide(configurationChan chan<- types.ConfigMessage) error
 }