feature(app.py): adding queue_metrics to queues

publishing queue metrics for SRE

[none]

storage/__init__.py

@@ -5,8 +5,6 @@ from storage.distributedstorage import DistributedStorage
 from storage.swift import SwiftStorage
 from storage.downloadproxy import DownloadProxy
 
-from urlparse import urlparse, parse_qs
-
 STORAGE_DRIVER_CLASSES = {
   'LocalStorage': LocalStorage,
   'S3Storage': S3Storage,
@@ -15,6 +13,7 @@ STORAGE_DRIVER_CLASSES = {
   'SwiftStorage': SwiftStorage,
 }
 
+
 def get_storage_driver(location, metric_queue, chunk_cleanup_queue, storage_params):
   """ Returns a storage driver class for the given storage configuration
       (a pair of string name and a dict of parameters). """