Expose Django SESSION_COOKIE_NAME setting

There are situations in which it is convenient to be able to modify the name of the cookie that the application uses for storing the session token (conflicts with other cookies on the same domain, for example).

netbox/netbox/settings.py

@@ -120,6 +120,7 @@ REPORTS_ROOT = getattr(configuration, 'REPORTS_ROOT', os.path.join(BASE_DIR, 're
 RQ_DEFAULT_TIMEOUT = getattr(configuration, 'RQ_DEFAULT_TIMEOUT', 300)
 SCRIPTS_ROOT = getattr(configuration, 'SCRIPTS_ROOT', os.path.join(BASE_DIR, 'scripts')).rstrip('/')
 SESSION_FILE_PATH = getattr(configuration, 'SESSION_FILE_PATH', None)
+SESSION_COOKIE_NAME = getattr(configuration, 'SESSION_COOKIE_NAME', 'sessionid')
 SHORT_DATE_FORMAT = getattr(configuration, 'SHORT_DATE_FORMAT', 'Y-m-d')
 SHORT_DATETIME_FORMAT = getattr(configuration, 'SHORT_DATETIME_FORMAT', 'Y-m-d H:i')
 SHORT_TIME_FORMAT = getattr(configuration, 'SHORT_TIME_FORMAT', 'H:i:s')