Fix BDM JSON-Schema validation

Current BDM JSON-Schema validation doesn't work for invalid device
parameter in 2nd dict, because JSON-Schema definition is wrong.
This patch fixes it.

Co-Authored-By: Zhenyu Zheng <zhengzhenyu@huawei.com>

Conflicts:
        nova/api/openstack/compute/schemas/block_device_mapping.py
        nova/tests/unit/api/openstack/compute/test_block_device_mapping.py

NOTE(mriedem): The conflicts were due to some additional validation and
tests added for BDMs v2.1 in Newton which are not in Mitaka.

Change-Id: I56348dc2b7abd9526dfbf21305755505765811c5
Closes-Bug: #1651064
(cherry picked from commit a65551ecd0)
(cherry picked from commit c00d433d29)

nova/api/openstack/compute/schemas/block_device_mapping.py

@@ -68,6 +68,6 @@ block_device_mapping['properties'].update(block_device_mapping_new_item)
 server_create = {
     'block_device_mapping_v2': {
         'type': 'array',
-        'items': [block_device_mapping]
+        'items': block_device_mapping
     }
 }

nova/api/openstack/compute/schemas/block_device_mapping_v1.py

@@ -44,6 +44,6 @@ legacy_block_device_mapping = {
 server_create = {
     'block_device_mapping': {
         'type': 'array',
-        'items': [legacy_block_device_mapping]
+        'items': legacy_block_device_mapping
     }
 }

nova/tests/unit/api/openstack/compute/test_block_device_mapping.py

@@ -150,6 +150,21 @@ class BlockDeviceMappingTestV21(test.TestCase):
         params = {block_device_mapping.ATTRIBUTE_NAME: self.bdm}
         self._test_create(params, no_image=True)
 
+    def test_create_instance_with_invalid_bdm_in_2nd_dict(self):
+        bdm_1st = {"source_type": "image", "delete_on_termination": True,
+                   "boot_index": 0,
+                   "uuid": "2ff3a1d3-ed70-4c3f-94ac-941461153bc0",
+                   "destination_type": "local"}
+        bdm_2nd = {"source_type": "volume",
+                   "uuid": "99d92140-3d0c-4ea5-a49c-f94c38c607f0",
+                   "destination_type": "invalid"}
+        bdm = [bdm_1st, bdm_2nd]
+
+        params = {block_device_mapping.ATTRIBUTE_NAME: bdm,
+                  'imageRef': '2ff3a1d3-ed70-4c3f-94ac-941461153bc0'}
+        self.assertRaises(exception.ValidationError,
+                          self._test_create, params)
+
     def test_create_instance_with_device_name_not_string(self):
         self.bdm[0]['device_name'] = 123
         old_create = compute_api.API.create
@@ -385,3 +400,8 @@ class BlockDeviceMappingTestV2(BlockDeviceMappingTestV21):
         # Add a check whether the destination type is invalid
         # in V2.1 API only. So this test is skipped in V2.0 API
         pass
+
+    def test_create_instance_with_invalid_bdm_in_2nd_dict(self):
+        # Add a check whether the destination type is invalid
+        # in V2.1 API only. So this test is skipped in V2.0 API
+        pass

nova/tests/unit/api/openstack/compute/test_block_device_mapping_v1.py

@@ -277,7 +277,7 @@ class BlockDeviceMappingTestV21(test.TestCase):
                {'device_name': 'foo2', 'volume_id': fakes.FAKE_UUID,
                 'delete_on_termination': True},
                {'device_name': 'foo3', 'volume_id': fakes.FAKE_UUID,
-                'delete_on_termination': 'invalid'},
+                'delete_on_termination': 'False'},
                {'device_name': 'foo4', 'volume_id': fakes.FAKE_UUID,
                 'delete_on_termination': False},
                {'device_name': 'foo5', 'volume_id': fakes.FAKE_UUID,
@@ -307,6 +307,16 @@ class BlockDeviceMappingTestV21(test.TestCase):
         self.stubs.Set(compute_api.API, '_validate_bdm', _validate_bdm)
         self._test_create(params)
 
+    def test_create_instance_with_bdm_delete_on_termination_invalid_2nd(self):
+        bdm = [{'device_name': 'foo1', 'volume_id': fakes.FAKE_UUID,
+                'delete_on_termination': 'True'},
+               {'device_name': 'foo2', 'volume_id': fakes.FAKE_UUID,
+                'delete_on_termination': 'invalid'}]
+
+        params = {'block_device_mapping': bdm}
+        self.assertRaises(self.validation_error,
+                          self._test_create, params)
+
     def test_create_instance_decide_format_legacy(self):
         ext_info = extension_info.LoadedExtensionInfo()
         CONF.set_override('extensions_blacklist',