jichen a53dbc0c23 make metadata doc up to date
currently we have following output:

$ curl http://169.254.169.254/openstack
2012-08-10
2013-04-04
2013-10-17
2015-10-15
2016-06-30
2016-10-06
2017-02-22
latest

Change-Id: I6b4aed63d5c981abc9374baf929f05b26760e645
2018-04-10 09:41:22 +08:00
..
2017-07-18 15:41:20 +01:00
2018-04-04 14:00:47 +08:00
2017-07-18 15:41:20 +01:00
2017-07-18 15:41:20 +01:00