if not pro set user role to admin

controllers/user.go

@@ -410,6 +410,9 @@ func createUser(w http.ResponseWriter, r *http.Request) {
 		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
 		return
 	}
+	if !servercfg.IsPro {
+		user.PlatformRoleID = models.AdminRole
+	}
 
 	if user.PlatformRoleID == "" {
 		logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("platform role is missing"), "badrequest"))