incorrect result of adding tags for network

[shihanzhang]

I add a empty tag to a network, neutron-server return incorrect result, the details is below:

neutronclient version: 4.2.0
neutron --debug tag-add --resource-type network --resource 9eb7f03f-aaf0-4079-9244-65200176c901 --tag ''
root@server201:~# neutron net-show 9eb7f03f-aaf0-4079-9244-65200176c901
+---------------------------+--------------------------------------+
| Field | Value |
+---------------------------+--------------------------------------+
| admin_state_up | True |
| availability_zone_hints | |
| availability_zones | |
| created_at | 2016-07-12T08:02:01 |
| description | |
| id | 9eb7f03f-aaf0-4079-9244-65200176c901 |
| ipv4_address_scope | |
| ipv6_address_scope | |
| mtu | 1450 |
| name | test |
| port_security_enabled | True |
| provider:network_type | vxlan |
| provider:physical_network | |
| provider:segmentation_id | 8 |
| router:external | False |
| shared | False |
| status | ACTIVE |
| subnets | |
| tags | .json |
| tenant_id | 9e211e5ad3c0407aaf6c5803dc307c27 |
| updated_at | 2016-07-12T08:02:01 |
+---------------------------+--------------------------------------+

[Brandon Logan (brandon-logan)]

FYI: This is what the client is actually sending to the server:

DEBUG: keystoneauth.session REQ: curl -g -i -X PUT http://192.168.33.12:9696/v2.0/networks/80a98608-a814-4a28-91e9-aa6c99fe65ba/tags/.json -H "User-Agent: python-neutronclient" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}4529f87d3b08a34dd027de34cfc3763f5767c5c1"
DEBUG: keystoneauth.session RESP: [201] Content-Type: application/json Content-Length: 4 X-Openstack-Request-Id: req-157ca980-4c25-4426-9ecc-b278dc3e5101 Date: Tue, 12 Jul 2016 18:50:50 GMT Connection: keep-alive

specifically:
curl -g -i -X PUT http://192.168.33.12:9696/v2.0/networks/80a98608-a814-4a28-91e9-aa6c99fe65ba/tags/.json

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/342536

[OpenStack Infra (hudson-openstack)]

Change abandoned by shihanzhang (<email address hidden>) on branch: master
Review: https://review.openstack.org/342536

[Akihiro Motoki (amotoki)]

OSC network tag support is under development. We can fix this in neutron CLI side too.

[Benard Okolie (benokolie)]

It looks like this problem has already been fixed in the latest version of python-neutronclient with https://review.openstack.org/#/c/396727/.

Can we go ahead and close this bug?

[Akihiro Motoki (amotoki)]

This was fixed by a combination of:
neutronclient https://review.openstack.org/#/c/452488/
neutron https://bugs.launchpad.net/neutron/+bug/1694897 and https://review.openstack.org/#/c/470016/