Fix tests on Windows

Fix #377

tests/handlers/api/test_vpcs.py

@@ -16,6 +16,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import pytest
+import sys
 import os
 from tests.utils import asyncio_patch
 from unittest.mock import patch
@@ -76,6 +77,7 @@ def test_vpcs_nio_create_udp(server, vm):
     assert response.json["type"] == "nio_udp"
 
 
+@pytest.mark.skipif(sys.platform.startswith("win"), reason="Not supported on Windows")
 def test_vpcs_nio_create_tap(server, vm, ethernet_device):
     with patch("gns3server.modules.base_manager.BaseManager.has_privileged_access", return_value=True):
         response = server.post("/projects/{project_id}/vpcs/vms/{vm_id}/adapters/0/ports/0/nio".format(project_id=vm["project_id"], vm_id=vm["vm_id"]), {"type": "nio_tap",