Add missed 'Server ID' output in attachment-listrocky-em4.0.3

'server_id' is not Attachment attribute, should be
set by 'instance' attribute.

v3/attachments respond body:

{"attachments":
   [{"status": "attached",
     "instance": INSTANCE_UUID,
     "id": ATTACHMENT_UUID,
     "volume_id": VOLUME_UUID,
    },
    ...
    ]
}

Closes-Bug: #1860393
Change-Id: Ica5d278cb7455befe1db4be0ab65114fd606ea0a
(cherry picked from commit 03f228c11e0d88dcc396b30b7544b5cfde894750)
(cherry picked from commit 511224425804621550bf30403f7768eebe6f34ca)

1 files changed, 16 insertions, 0 deletions

diff --git a/cinderclient/tests/unit/v3/test_shell.py b/cinderclient/tests/unit/v3/test_shell.py
index c9f7760..79f36a5 100644
--- a/cinderclient/tests/unit/v3/test_shell.py
+++ b/cinderclient/tests/unit/v3/test_shell.py
@@ -51,6 +51,7 @@ from cinderclient import client
 from cinderclient import exceptions
 from cinderclient import shell
 from cinderclient import utils as cinderclient_utils
+from cinderclient.v3 import attachments
 from cinderclient.v3 import volume_snapshots
 from cinderclient.v3 import volumes
 
@@ -402,6 +403,21 @@ class ShellTest(utils.TestCase):
         self.run_command(command)
         self.assert_called('GET', '/attachments%s' % expected)
 
+    @mock.patch('cinderclient.utils.print_list')
+    @mock.patch.object(cinderclient.v3.attachments.VolumeAttachmentManager,
+            'list')
+    def test_attachment_list_setattr(self, mock_list, mock_print):
+        command = '--os-volume-api-version 3.27 attachment-list '
+        fake_attachment = [attachments.VolumeAttachment(mock.ANY, attachment)
+                for attachment in fakes.fake_attachment_list['attachments']]
+        mock_list.return_value = fake_attachment
+        self.run_command(command)
+        for attach in fake_attachment:
+            setattr(attach, 'server_id', getattr(attach, 'instance'))
+        columns = ['ID', 'Volume ID', 'Status', 'Server ID']
+        mock_print.assert_called_once_with(fake_attachment, columns,
+                sortby_index=0)
+
     def test_revert_to_snapshot(self):
         original = cinderclient_utils.find_resource