### Scenario ###

Try to import Zone that is already exists.

## create zone example.com.
$ openstack zone create example.com. --email example

+----------------+--------------------------------------+
| Field | Value |
+----------------+--------------------------------------+
| action | CREATE |
| attributes | |
| created_at | 2021-11-07T12:49:59.000000 |
| description | None |
| email | example |
| id | 329b1e36-c4b3-4272-8901-d1e1adf37d74 |
| masters | |
| name | example.com. |
| pool_id | 794ccc2c-d751-44fe-b57f-8894c9f5c842 |
| project_id | 3bf2082af8b5464fa12fdbb61874ed47 |
| serial | 1636289398 |
| status | PENDING |
| transferred_at | None |
| ttl | 3600 |
| type | PRIMARY |
| updated_at | None |
| version | 1 |
+----------------+--------------------------------------+

##show all zones
$ openstack zone list

+--------------------------------------+-------------------+---------+------------+--------+--------+
| id | name | type | serial | status | action |
+--------------------------------------+-------------------+---------+------------+--------+--------+
| 870c5557-82e4-4e64-b393-8b289c750dfa | example-5568.org. | PRIMARY | 1636117737 | ACTIVE | NONE |
| 329b1e36-c4b3-4272-8901-d1e1adf37d74 | example.com. | PRIMARY | 1636289398 | ACTIVE | NONE |
+--------------------------------------+-------------------+---------+------------+--------+--------+

## export the zone
$ openstack zone export create 329b1e36-c4b3-4272-8901-d1e1adf37d74

+------------+--------------------------------------+
| Field | Value |
+------------+--------------------------------------+
| created_at | 2021-11-07T12:52:06.000000 |
| id | fd3ff199-467f-41bd-83aa-8014f32544cb |
| location | None |
| message | None |
| project_id | 3bf2082af8b5464fa12fdbb61874ed47 |
| status | PENDING |
| updated_at | None |
| version | 1 |
| zone_id | 329b1e36-c4b3-4272-8901-d1e1adf37d74 |
+------------+--------------------------------------+

##show the export file
$ openstack zone export showfile fd3ff199-467f-41bd-83aa-8014f32544cb -f value > zone_file.txt

##import the zone file that exported
$ openstack zone import create zone_file.txt
+------------+--------------------------------------+
| Field | Value |
+------------+--------------------------------------+
| created_at | 2021-11-07T12:53:35.000000 |
| id | 228facb7-622a-49a4-aa75-b07e96f62aca |
| message | None |
| project_id | 3bf2082af8b5464fa12fdbb61874ed47 |
| status | PENDING |
| updated_at | None |
| version | 1 |
| zone_id | None |
+------------+--------------------------------------+

##show all the parameters for import zone file
$ openstack zone import show 228facb7-622a-49a4-aa75-b07e96f62aca
+------------+--------------------------------------+
| Field | Value |
+------------+--------------------------------------+
| created_at | 2021-11-07T12:53:35.000000 |
| id | 228facb7-622a-49a4-aa75-b07e96f62aca |
| message | An undefined error occurred. |
| project_id | 3bf2082af8b5464fa12fdbb61874ed47 |
| status | ERROR |
| updated_at | 2021-11-07T12:53:35.000000 |
| version | 2 |
| zone_id | None |
+------------+--------------------------------------+

### Actual result ###

We do see an error which is not clear
+---------+-------------------------------+
| Field | Value |
+---------+-------------------------------+
| message | An undefined error occurred. |
| status | ERROR |
+---------+-------------------------------+

### Expected result ###

we expect to get error are saying that we have a duplicate zone,
 we can see it if we open the log in Central.

### Note ###

Message logged in Central is:
        Nov 07 13:26:16 seal26 designate-central[803950]: ERROR designate.central.service raise exc_dup(msg)
        Nov 07 13:26:16 seal26 designate-central[803950]: ERROR designate.central.service designate.exceptions.DuplicateZone: Duplicate Zone