Fix T401 and T402 errors

Fix all the one line docstring errors in T401 and T402, now
we no longer ignore any of our own rules in hacking.py

Fix run_tests.sh to pick up the 'stress' directory, which tox
does for pep8. Additional fixes to the stress tests for T4* tests

Change-Id: Ie569a924e8eb355afbbd9b244f77dec34061b5cb
diff --git a/stress/utils/util.py b/stress/utils/util.py
index f90796d..ec63b99 100644
--- a/stress/utils/util.py
+++ b/stress/utils/util.py
@@ -50,6 +50,6 @@
 
 
 def enum(*sequential, **named):
-    """Create auto-incremented enumerated types"""
+    """Create auto-incremented enumerated types."""
     enums = dict(zip(sequential, range(len(sequential))), **named)
     return type('Enum', (), enums)