Comment 11 for bug 1663456

Change abandoned by Brin Zhang (<email address hidden>) on branch: master
Review: https://review.opendev.org/702070
Reason: This fix is redundant, in latest version, and base on https://review.opendev.org/#/c/580271/, the aggregare metadata's update_at can be populated automatically.

root@ubuntu-OpenStack:/opt/stack/nova# nova --debug aggregate-set-metadata test_agg0 host1='aaaa'

Version X-OpenStack-Nova-API-Version: 2.81 x-compute-request-id: req-c25e19d5-3862-4bb5-bb96-41fb1d30f389 x-openstack-request-id: req-c25e19d5-3862-4bb5-bb96-41fb1d30f389
DEBUG (session:580) RESP BODY: {"aggregate": {"id": 4, "uuid": "688b4bf1-6927-45bd-9c6c-6ad1108788ea", "name": "test_agg0", "hosts": [], "metadata": {"host1": "aaaa"}, "created_at": "2020-01-14T06:20:18.000000", "updated_at": "2020-01-14T06:21:34.729395", "deleted_at": null, "deleted": false, "availability_zone": null}}
DEBUG (session:943) POST call to compute for http://192.168.190.23/compute/v2.1/os-aggregates/4/action used request id req-c25e19d5-3862-4bb5-bb96-41fb1d30f389
Metadata has been successfully updated for aggregate 4.
+----+-----------+-------------------+-------+--------------+--------------------------------------+
| Id | Name | Availability Zone | Hosts | Metadata | UUID |
+----+-----------+-------------------+-------+--------------+--------------------------------------+
| 4 | test_agg0 | - | | 'host1=aaaa' | 688b4bf1-6927-45bd-9c6c-6ad1108788ea |
+----+-----------+-------------------+-------+--------------+--------------------------------------+