add pragmas to disable pylint warnings for missing docstrings in test files

freqtrade/tests/test_main.py

@@ -1,3 +1,4 @@
+# pragma pylint: disable=missing-docstring
 import copy
 from unittest.mock import MagicMock, call
 

freqtrade/tests/test_persistence.py

@@ -1,7 +1,7 @@
+# pragma pylint: disable=missing-docstring
 from freqtrade.exchange import Exchange
 from freqtrade.persistence import Trade
 
-
 def test_exec_sell_order(mocker):
     api_mock = mocker.patch('freqtrade.main.exchange.sell', side_effect='mocked_order_id')
     trade = Trade(

freqtrade/tests/test_telegram.py

@@ -1,3 +1,4 @@
+# pragma pylint: disable=missing-docstring
 from datetime import datetime
 from unittest.mock import MagicMock