Remove Windows support

Since Winstackers project has been retired, running OpenStack on
Windows operating systems is no longer tested or maintained.

Change-Id: I9f1a17d535f0aae7dfd584f11908dbea7aaaea36

releasenotes/notes/remove-windows-1a58a6af889e45a3.yaml

@@ -0,0 +1,4 @@
+---
+upgrade:
+  - |
+    Support for Windows operating systems has been removed.

tooz/drivers/file.py

@@ -20,9 +20,7 @@ import functools
 import hashlib
 import logging
 import os
-import re
 import shutil
-import sys
 import tempfile
 import threading
 import weakref
@@ -226,7 +224,7 @@ class FileDriver(coordination.CoordinationDriverCachedRunWatchers,
     def __init__(self, member_id, parsed_url, options):
         """Initialize the file driver."""
         super().__init__(member_id, parsed_url, options)
-        self._dir = self._normalize_path(parsed_url.path)
+        self._dir = parsed_url.path
         self._group_dir = os.path.join(self._dir, 'groups')
         self._tmpdir = os.path.join(self._dir, 'tmp')
         self._driver_lock_path = os.path.join(self._dir, '.driver_lock')
@@ -238,19 +236,6 @@ class FileDriver(coordination.CoordinationDriverCachedRunWatchers,
         self._safe_member_id = self._make_filesystem_safe(member_id)
         self._timeout = int(self._options.get('timeout', 10))
 
-    @staticmethod
-    def _normalize_path(path):
-        if sys.platform == 'win32':
-            # Replace slashes with backslashes and make sure we don't
-            # have any at the beginning of paths that include drive letters.
-            #
-            # Expected url format:
-            # file:////share_address/share_name
-            # file:///C:/path
-            return re.sub(r'\\(?=\w:\\)', '',
-                          os.path.normpath(path))
-        return path
-
     @classmethod
     def _get_raw_lock(cls, path, member_id):
         lock_barrier = cls._barriers.setdefault(path, _Barrier())

tooz/tests/drivers/test_file.py

@@ -14,7 +14,6 @@
 #    under the License.
 
 import os
-from unittest import mock
 
 import fixtures
 from testtools import testcase
@@ -53,19 +52,3 @@ class TestFileDriver(testcase.TestCase):
                                safe_group_id, '.metadata'))
         self.assertRaises(tooz.ToozError,
                           coord.delete_group(b"my_group").get)
-
-    @mock.patch('os.path.normpath', lambda x: x.replace('/', '\\'))
-    @mock.patch('sys.platform', 'win32')
-    def test_base_dir_win32(self):
-        coord = coordination.get_coordinator(
-            'file:///C:/path/', self._FAKE_MEMBER_ID)
-        self.assertEqual('C:\\path\\', coord._dir)
-
-        coord = coordination.get_coordinator(
-            'file:////share_addr/share_path/', self._FAKE_MEMBER_ID)
-        self.assertEqual('\\\\share_addr\\share_path\\', coord._dir)
-
-        # Administrative shares should be handled properly.
-        coord = coordination.get_coordinator(
-            'file:////c$/path/', self._FAKE_MEMBER_ID)
-        self.assertEqual('\\\\c$\\path\\', coord._dir)