Always reset CONF when starting the wsgi app

This ensures that options loaded during any prior run of the
application are dropped before being added again during init_application.

Change-Id: I7e4f230b5e824d4aa072a2a18d0989e670eda77a

tricircle/api/wsgi.py

@@ -47,6 +47,9 @@ def init_application():
 
     # initialize the config system
     conf_file = _get_config_file()
+    # NOTE(hberaud): Call reset to ensure the ConfigOpts object doesn't
+    # already contain registered options if the app is reloaded.
+    CONF.reset()
     config.init(app.common_opts, ['--config-file', conf_file])
 
     LOG.info("Configuration:")