Improve test suite (#628)

Signed-off-by: Thomas Miceli <tho.miceli@gmail.com>

internal/config/config.go

@@ -2,7 +2,6 @@ package config
 
 import (
 	"fmt"
-	"github.com/thomiceli/opengist/internal/session"
 	"io"
 	"net/url"
 	"os"
@@ -13,6 +12,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/thomiceli/opengist/internal/session"
+
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
 	"gopkg.in/yaml.v3"