change directory that run.stress-tests.py looks for old envs in by default

git-svn-id: file:///svn/toku/tokudb@44959 c7de825b-a66e-492c-adef-691d508d4ae1

scripts/run.stress-tests.py

@@ -658,7 +658,7 @@ if __name__ == '__main__':
     upgrade_group.add_option('--add_old_version', action='append', type='choice', dest='old_versions', choices=['4.2.0', '5.0.8', '5.2.7'],
                              help='which old versions to use for running the stress tests in upgrade mode. can be specified multiple times [options=4.2.0, 5.0.8, 5.2.7]')
     upgrade_group.add_option('--old_environments_dir', type='string', dest='old_environments_dir',
-                             default='../../tokudb.data/stress_environments',
+                             default='../../tokudb.data/old-stress-test-envs',
                              help='directory containing old version environments (should contain 5.0.8/, 5.2.7/, etc, and the environments should be in those) [default=../../tokudb.data/stress_environments]')
     parser.add_option_group(upgrade_group)