Use 'except ... as' syntax

This syntax works on Python 2.6 through 3.x.  lib/ansible/module_utils
(and lib/ansible/modules) need to support Python 2.4, so I didn't touch
those.

lib/ansible/executor/process/worker.py

@@ -67,7 +67,7 @@ class WorkerProcess(multiprocessing.Process):
             if fileno is not None:
                 try:
                     self._new_stdin = os.fdopen(os.dup(fileno))
-                except OSError, e:
+                except OSError as e:
                     # couldn't dupe stdin, most likely because it's
                     # not a valid file descriptor, so we just rely on
                     # using the one that was passed in
@@ -137,7 +137,7 @@ class WorkerProcess(multiprocessing.Process):
                 except:
                     # FIXME: most likely an abort, catch those kinds of errors specifically
                     break
-            except Exception, e:
+            except Exception as e:
                 debug("WORKER EXCEPTION: %s" % e)
                 debug("WORKER EXCEPTION: %s" % traceback.format_exc())
                 try:

lib/ansible/executor/task_executor.py

@@ -125,14 +125,14 @@ class TaskExecutor:
             result = json.dumps(res)
             debug("done dumping result, returning")
             return result
-        except AnsibleError, e:
+        except AnsibleError as e:
             return dict(failed=True, msg=to_unicode(e, nonstring='simplerepr'))
         finally:
             try:
                 self._connection.close()
             except AttributeError:
                 pass
-            except Exception, e:
+            except Exception as e:
                 debug("error closing connection: %s" % to_unicode(e))
 
     def _get_loop_items(self):
@@ -187,7 +187,7 @@ class TaskExecutor:
 
             try:
                 tmp_task = self._task.copy()
-            except AnsibleParserError, e:
+            except AnsibleParserError as e:
                 results.append(dict(failed=True, msg=str(e)))
                 continue