apiv2. owner isn't set for new images

[Jack Ivanov]

After switched to APIv2, owner is not set for new images

You can see "owner is None". It affects other components, include Horizon, to determine the project. Owner should be set even if no `--owner` specified

# openstack image create "cirros-$RANDOM" --file cirros-0.3.5-x86_64-disk.img --disk-format qcow2 --container-format bare
+------------------+------------------------------------------------------+
| Field | Value |
+------------------+------------------------------------------------------+
| checksum | f8ab98ff5e73ebab884d80c9dc9c7290 |
| container_format | bare |
| created_at | 2017-11-08T06:33:35Z |
| disk_format | qcow2 |
| file | /v2/images/5b815302-0ee6-442a-91d8-212e1035d91b/file |
| id | 5b815302-0ee6-442a-91d8-212e1035d91b |
| min_disk | 0 |
| min_ram | 0 |
| name | cirros-32648 |
| owner | None |
| protected | False |
| schema | /v2/schemas/image |
| size | 13267968 |
| status | active |
| tags | |
| updated_at | 2017-11-08T06:33:35Z |
| virtual_size | None |
| visibility | shared |
+------------------+------------------------------------------------------+

[Jack Ivanov (gunph1ld)]

[paste_deploy]
# ...
flavor = keystone

should be defined