PYTHON-1734 Skip failing index tests on MongoDB 4.1

Author: ShaneHarvey

test/test_legacy_api.py

@@ -1263,6 +1263,7 @@ def test_ensure_index(self):
  # Clean up indexes for later tests
  db.test.drop_indexes()
 
+ @client_context.require_version_max(4, 1) # PYTHON-1734
  def test_ensure_index_threaded(self):
  coll = self.db.threaded_index_creation
  index_docs = []
@@ -1323,6 +1324,7 @@ def run(self):
  finally:
  coll.drop()
 
+ @client_context.require_version_max(4, 1) # PYTHON-1734
  def test_ensure_unique_index_threaded(self):
  coll = self.db.test_unique_threaded
  coll.drop()