Populate bulk_update_invalid_data for vpn API tests

Give each vpn test class an invalid payload so
test_bulk_update_objects_validation_error runs instead of skipping.

Most vpn models carry several choice fields, so these mostly use one of
those. TunnelGroup has none and uses a nonexistent owner pk, matching the
organizational models in dcim, and L2VPNTermination uses a nonexistent
l2vpn pk because its other relations are read-only.

IPSecPolicy uses a non-numeric pfs_group value, since the Diffie-Hellman
group choices are integers.

All 10 vpn API test classes now run the test.

netbox/vpn/tests/test_api.py

@@ -38,6 +38,9 @@ class TunnelGroupTestCase(APIViewTestCases.APIViewTestCase):
     bulk_update_data = {
         'description': 'New description',
     }
+    bulk_update_invalid_data = {
+        'owner': 99999,
+    }
 
     @classmethod
     def setUpTestData(cls):
@@ -58,6 +61,9 @@ class TunnelTestCase(APIViewTestCases.APIViewTestCase):
         'encapsulation': TunnelEncapsulationChoices.ENCAP_GRE,
         'description': 'New description',
     }
+    bulk_update_invalid_data = {
+        'status': 'not-a-valid-status',
+    }
 
     @classmethod
     def setUpTestData(cls):
@@ -117,6 +123,9 @@ class TunnelTerminationTestCase(APIViewTestCases.APIViewTestCase):
     bulk_update_data = {
         'role': TunnelTerminationRoleChoices.ROLE_PEER,
     }
+    bulk_update_invalid_data = {
+        'role': 'not-a-valid-role',
+    }
     user_permissions = ('vpn.view_tunnel', )
 
     @classmethod
@@ -189,6 +198,9 @@ class IKEProposalTestCase(APIViewTestCases.APIViewTestCase):
         'group': DHGroupChoices.GROUP_19,
         'description': 'New description',
     }
+    bulk_update_invalid_data = {
+        'authentication_algorithm': 'not-a-valid-authentication-algorithm',
+    }
 
     @classmethod
     def setUpTestData(cls):
@@ -252,6 +264,9 @@ class IKEPolicyTestCase(APIViewTestCases.APIViewTestCase):
         'description': 'New description',
         'preshared_key': 'New key',
     }
+    bulk_update_invalid_data = {
+        'version': 'not-a-valid-version',
+    }
 
     @classmethod
     def setUpTestData(cls):
@@ -325,6 +340,9 @@ class IPSecProposalTestCase(APIViewTestCases.APIViewTestCase):
         'authentication_algorithm': AuthenticationAlgorithmChoices.AUTH_HMAC_MD5,
         'description': 'New description',
     }
+    bulk_update_invalid_data = {
+        'encryption_algorithm': 'not-a-valid-encryption-algorithm',
+    }
 
     @classmethod
     def setUpTestData(cls):
@@ -374,6 +392,9 @@ class IPSecPolicyTestCase(APIViewTestCases.APIViewTestCase):
         'pfs_group': DHGroupChoices.GROUP_5,
         'description': 'New description',
     }
+    bulk_update_invalid_data = {
+        'pfs_group': 'not-a-valid-pfs-group',
+    }
 
     @classmethod
     def setUpTestData(cls):
@@ -519,6 +540,10 @@ class IPSecProfileTestCase(APIViewTestCases.APIViewTestCase):
             'description': 'New description',
         }
 
+        cls.bulk_update_invalid_data = {
+            'mode': 'not-a-valid-mode',
+        }
+
 
 class L2VPNTestCase(APIViewTestCases.APIViewTestCase):
     model = L2VPN
@@ -549,6 +574,9 @@ class L2VPNTestCase(APIViewTestCases.APIViewTestCase):
     bulk_update_data = {
         'description': 'New description',
     }
+    bulk_update_invalid_data = {
+        'status': 'not-a-valid-status',
+    }
 
     @classmethod
     def setUpTestData(cls):
@@ -656,3 +684,7 @@ class L2VPNTerminationTestCase(APIViewTestCases.APIViewTestCase):
         cls.bulk_update_data = {
             'l2vpn': l2vpns[2].pk
         }
+
+        cls.bulk_update_invalid_data = {
+            'l2vpn': 99999,
+        }