Change a test class name to allow discovery w/o pytest.ini

Author: mdmintz

examples/upgrade_chromedriver.py

@@ -7,7 +7,7 @@
 import sys
 
 
-class UpgradeChromedriverTests():
+class TestUpgradeChromedriver():
     def basic_run(self, testdir):
         testdir.makepyfile(
             """