Fix test on Windows

Sadly python crash on my Windows and I can't run the full test
suite.

Fix #377

tests/handlers/api/test_qemu.py

@@ -17,6 +17,7 @@
 
 import pytest
 import os
+import sys
 import stat
 from tests.utils import asyncio_patch
 from unittest.mock import patch
@@ -26,7 +27,10 @@ from gns3server.config import Config
 @pytest.fixture
 def fake_qemu_bin():
 
-    bin_path = os.path.join(os.environ["PATH"], "qemu-system-x86_64")
+    if sys.platform.startswith("win"):
+        bin_path = os.path.join(os.environ["PATH"], "qemu-system-x86_64w.exe")
+    else:
+        bin_path = os.path.join(os.environ["PATH"], "qemu-system-x86_64")
     with open(bin_path, "w+") as f:
         f.write("1")
     os.chmod(bin_path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR)