log what we return instead of Response.get_data()

The Response.get_data() function wasn't giving us the whole data, but a
list of keys in the data like so:

now

    DEBUG [ptero_workflow.api.v1.views]     Returning: ( { 'begins': [0],
        'color': 0,
        'colors': [0],
        'data': { u'petri_response_links': ...
        'inputs': { u'param': u'foo'},
        'method': { 'name': u'execute',
                    'service': u'shell-command',
                    'task': { 'name': u'C', 'type': u'method-list'}},
        'outputs': { u'param': u'foo'},
        'parent_color': None,
        'status': u'begun',
        'status_history': [ { 'status': u'begun',
                              'timestamp': '2015-01-28 01:07:18'}]},
      200)

was

    DEBUG [ptero_workflow.api.v1.views]     Body: 'beginscolorcolorsdatainputsmethodoutputsparent_colorstatusstatus_history'

which is not helpful.

ptero_common/logging_configuration.py

@@ -3,6 +3,7 @@
 from requests.models import Request
 import logging
 import os
+from pprint import pformat
 
 try:
     from flask import request
@@ -64,8 +65,8 @@ def wrapper(*args, **kwargs):
             response = Response(*result)
             logger.info("Responded %s to %s  %s",
                 response.status_code, target.__name__.upper(), request.url)
-            logger.debug("    Headers: '%s'", response.headers)
-            logger.debug("    Body: '%s'", response.get_data())
+            logger.debug("    Returning: %s",
+                         pformat(result, indent=2, width=80))
             return result
         return wrapper
     return _log_response