Initialize logger for rpc-server and wsgi script

Currently logger is not properly initialized according to config
options or process arguments when the neutron-rpc-server script or
the api wsgi script is used. Because of this neutron does not generate
the log files as expected when we deploy api using WSGI and use
neutron-rpc-server, instead of the monolithic neutron-server.

This ensures the logger is initialized even when these two scripts
are used.

Closes-Bug: #2030904
Related-Bug: #1693691
Change-Id: I13bcd36c237555e0ca60d5ffc214b8f3bf6e478f

neutron/server/__init__.py

@@ -53,6 +53,7 @@ def _init_configuration():
     conf_files = _get_config_files()
     config.register_common_config_options()
     config.init(sys.argv[1:], default_config_files=conf_files)
+    config.setup_logging()
     config.set_config_defaults()
     if not cfg.CONF.config_file:
         sys.exit(_("ERROR: Unable to find configuration file via the default"

neutron/service.py

@@ -75,8 +75,6 @@ class NeutronApiService(WsgiService):
 
     @classmethod
     def create(cls, app_name='neutron'):
-        # Setup logging early
-        config.setup_logging()
         service = cls(app_name)
         return service