chore(storage): common sorting for all servers

internal/provider/perfectprivacy/updater/servers.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"net/url"
+	"sort"
 	"strings"
 
 	"github.com/qdm12/gluetun/internal/models"
@@ -46,7 +47,7 @@ func (u *Updater) GetServers(ctx context.Context, minServers int) (
 
 	servers = cts.toServersSlice()
 
-	sortServers(servers)
+	sort.Sort(models.SortableServers(servers))
 
 	return servers, nil
 }

internal/provider/perfectprivacy/updater/sort.go

@@ -1,13 +0,0 @@
-package perfectprivacy
-
-import (
-	"sort"
-
-	"github.com/qdm12/gluetun/internal/models"
-)
-
-func sortServers(servers []models.Server) {
-	sort.Slice(servers, func(i, j int) bool {
-		return servers[i].City < servers[j].City
-	})
-}