Enabled hacking check H404

* [H404] Multi line docstrings should start without a leading new line.

Change-Id: I4754c98640c71e73fe99b864bd37a23f92377430

stackalytics/processor/driverlog.py

@@ -22,9 +22,7 @@ LOG = logging.getLogger(__name__)
 
 
 def _find_vote(review, ci_id, patch_set_number):
-    """
-    Finds vote corresponding to ci_id
-    """
+    """Finds vote corresponding to ci_id."""
     for patch_set in review['patchSets']:
         if patch_set['number'] == patch_set_number:
             for approval in (patch_set.get('approvals') or []):
@@ -38,9 +36,7 @@ def _find_vote(review, ci_id, patch_set_number):
 
 
 def find_ci_result(review, ci_map):
-    """
-    For a given stream of reviews yields results produced by CIs
-    """
+    """For a given stream of reviews yields results produced by CIs."""
 
     review_id = review['id']
     review_number = review['number']

stackalytics/processor/record_processor.py

@@ -326,8 +326,9 @@ class RecordProcessor(object):
         return mark
 
     def _process_review(self, record):
-        """
-         Process a review. Review spawns into records of three types:
+        """Process a review.
+
+        Review spawns into records of three types:
           * review - records that a user created review request
           * patch - records that a user submitted another patch set
           * mark - records that a user set approval mark to given review

tox.ini

@@ -53,8 +53,7 @@ commands = python setup.py build_sphinx
 
 [flake8]
 # E125 continuation line does not distinguish itself from next logical line
-# H404 multi line docstring should start with a summary
-ignore = E125,H404
+ignore = E125
 show-source = true
 builtins = _
 exclude=.venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,tools,build