Merge pull request #1162 from himank/AddFernetKey

Adding fernet key to use it as part of stdout commands

airflow/configuration.py

@@ -392,6 +392,7 @@ class ConfigParserWithDefaults(ConfigParser):
     # store password on boxes in text files.
     as_command_stdout = {
         ('core', 'sql_alchemy_conn'),
+        ('core', 'fernet_key'),
         ('celery', 'broker_url'),
         ('celery', 'celery_result_backend')
     }