Move Prom metrics to a dedicated port + improve Helm chart (#599)

internal/web/test/server.go

@@ -22,6 +22,7 @@ import (
 	"github.com/thomiceli/opengist/internal/config"
 	"github.com/thomiceli/opengist/internal/db"
 	"github.com/thomiceli/opengist/internal/git"
+	"github.com/thomiceli/opengist/internal/web/handlers/metrics"
 	"github.com/thomiceli/opengist/internal/web/server"
 )
 
@@ -240,3 +241,7 @@ type invitationAdmin struct {
 	nbMax         string `form:"nbMax"`
 	expiredAtUnix string `form:"expiredAtUnix"`
 }
+
+func NewTestMetricsServer() *metrics.Server {
+	return metrics.NewServer()
+}