Add --wrap option for "ironic driver-properties"

This patch tries to add --wrap option to limit the
length of each line.
Default is disabled.

Change-Id: I3c1b2797cb481e6e826e88da70d87033ed2ba291

ironicclient/tests/unit/v1/test_driver_shell.py

@@ -72,6 +72,38 @@ class DriverShellTest(utils.BaseTestCase):
         d_shell.do_driver_properties(client_mock, args)
         client_mock.driver.properties.assert_called_once_with("driver_name")
 
+    @mock.patch('ironicclient.common.cliutils.print_dict')
+    def test_do_driver_properties_with_wrap_default(self, mock_print_dict):
+        client_mock = self.client_mock
+        client_mock.driver.properties.return_value = {
+            'foo': 'bar',
+            'baz': 'qux'}
+        args = mock.MagicMock()
+        args.driver_name = 'driver_name'
+        args.wrap = 0
+
+        d_shell.do_driver_properties(client_mock, args)
+        mock_print_dict.assert_called_with(
+            {'foo': 'bar', 'baz': 'qux'},
+            dict_value='Description',
+            wrap=0)
+
+    @mock.patch('ironicclient.common.cliutils.print_dict')
+    def test_do_driver_properties_with_wrap(self, mock_print_dict):
+        client_mock = self.client_mock
+        client_mock.driver.properties.return_value = {
+            'foo': 'bar',
+            'baz': 'qux'}
+        args = mock.MagicMock()
+        args.driver_name = 'driver_name'
+        args.wrap = 80
+
+        d_shell.do_driver_properties(client_mock, args)
+        mock_print_dict.assert_called_with(
+            {'foo': 'bar', 'baz': 'qux'},
+            dict_value='Description',
+            wrap=80)
+
     def test_do_driver_show(self):
         client_mock = self.client_mock
         args = mock.MagicMock()

ironicclient/v1/driver_shell.py

@@ -48,15 +48,18 @@ def do_driver_show(cc, args):
 
 @cliutils.arg('driver_name', metavar='<driver>',
               help="Name of the driver.")
+@cliutils.arg('--wrap', dest='wrap', metavar='<integer>',
+              type=int, default=0,
+              help=('Wrap the output to a specified length. '
+                    'Positive number can realize wrap functionality. '
+                    '0 is default for disabled.'))
 def do_driver_properties(cc, args):
     """Get properties of a driver."""
     properties = cc.driver.properties(args.driver_name)
-    obj_list = []
-    for key, value in properties.items():
-        data = {'Property': key, 'Description': value}
-        obj_list.append(type('iface', (object,), data))
-    fields = ['Property', 'Description']
-    cliutils.print_list(obj_list, fields, mixed_case_fields=fields)
+    cliutils.print_dict(
+        properties,
+        wrap=args.wrap,
+        dict_value='Description')
 
 
 @cliutils.arg('driver_name',