Fix image import --disallow-failure flag

the flag should store False to 'allow_failure', not True.

Also, make the --allow-failure and --disallow-failure flags
mutually exclusive.

Change-Id: I03699e14d4d69d9f08caab647293732fc211dbad

Author: pshchelo

openstackclient/image/v2/image.py

@@ -1689,7 +1689,8 @@ def get_parser(self, prog_name):
                 "'copy-image' import method)"
             ),
         )
-        parser.add_argument(
+        allow_failure_group = parser.add_mutually_exclusive_group()
+        allow_failure_group.add_argument(
             '--allow-failure',
             action='store_true',
             dest='allow_failure',
@@ -1700,9 +1701,9 @@ def get_parser(self, prog_name):
                 'Only usable with --stores or --all-stores'
             ),
         )
-        parser.add_argument(
+        allow_failure_group.add_argument(
             '--disallow-failure',
-            action='store_true',
+            action='store_false',
             dest='allow_failure',
             default=True,
             help=_(

openstackclient/tests/unit/image/v2/test_image.py

@@ -2092,6 +2092,38 @@ def test_import_image__copy_image(self):
             all_stores_must_succeed=False,
         )
 
+    def test_import_image__copy_image_disallow_failure(self):
+        self.image.status = 'active'
+        arglist = [
+            self.image.name,
+            '--method',
+            'copy-image',
+            '--store',
+            'fast',
+            '--disallow-failure',
+        ]
+        verifylist = [
+            ('image', self.image.name),
+            ('import_method', 'copy-image'),
+            ('stores', ['fast']),
+            ('allow_failure', False),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        self.cmd.take_action(parsed_args)
+
+        self.image_client.import_image.assert_called_once_with(
+            self.image,
+            method='copy-image',
+            uri=None,
+            remote_region=None,
+            remote_image_id=None,
+            remote_service_interface=None,
+            stores=['fast'],
+            all_stores=None,
+            all_stores_must_succeed=True,
+        )
+
     def test_import_image__glance_download(self):
         arglist = [
             self.image.name,