Refactor devserver to print out relative paths to the update file

devserver.py

Index: devserver.py
diff --git a/devserver.py b/devserver.py
index dc670af71b57f68106e9eddc867e11af2d8c64bc..bf5e6d974abb2d432f745a36eea6559e9ab58cb9 100755
--- a/devserver.py
+++ b/devserver.py
@@ -15,7 +15,7 @@ import sys
 import autoupdate
 import builder
 
-CACHED_ENTRIES=12
+CACHED_ENTRIES = 12
 
 # Sets up global to share between classes.
 global updater
@@ -49,6 +49,9 @@ def _GetConfig(options):
                     'response.timeout': 10000,
                   },
                 }
+  if options.production:
+    base_config['global']['server.environment'] = 'production'
+
   return base_config
 
 
@@ -132,6 +135,8 @@ if __name__ == '__main__':
                     help='Use update payload from specified directory.')
   parser.add_option('--port', default=8080,
                     help='Port for the dev server to use.')
+  parser.add_option('--production', action='store_true', default=False,
+                    help='Have the devserver use production values.')
   parser.add_option('--proxy_port', default=None,
                     help='Port to have the client connect to (testing support)')
   parser.add_option('--src_image', default='',