Convert storageproxy tests to be pytest-able and use the new liveserver testcase pytest fixture

test/registry/liveserverfixture.py

@@ -75,6 +75,7 @@ class liveFlaskServer(object):
         raise RuntimeError("Failed to start the server after %d seconds. " % timeout)
 
       if self._can_connect():
+        self.app.config['SERVER_HOSTNAME'] = 'localhost:%s' % self._port_value.value
         break
 
   def _can_connect(self):