[goal] Prepare pep8 testing for Ubuntu Focal

As per victoria cycle testing runtime and community goal,
we need to migrate upstream CI/CD to Ubuntu Focal(20.04).

Add noqa doe C901 and F811 pep8 for Focal, failure can be
seen in - https://review.opendev.org/#/c/743130

Depends-On: https://review.opendev.org/#/c/738328/

Change-Id: I95fa40551d842ce652ab937b8848c64f09a3e131
Story: #2007865
Task: #40190

magnum/api/controllers/v1/bay.py

@@ -441,7 +441,7 @@ class BaysController(base.Controller):
 
     @base.Controller.api_version("1.2")  # noqa
     @expose.expose(BayID, body=Bay, status_code=202)
-    def post(self, bay):
+    def post(self, bay):  # noqa
         """Create a new bay.
 
         :param bay: a bay within the request body.
@@ -513,7 +513,7 @@ class BaysController(base.Controller):
     @wsme.validate(types.uuid, [BayPatchType])
     @expose.expose(BayID, types.uuid_or_name, body=[BayPatchType],
                    status_code=202)
-    def patch(self, bay_ident, patch):
+    def patch(self, bay_ident, patch):  # noqa
         """Update an existing bay.
 
         :param bay_ident: UUID or logical name of a bay.
@@ -527,7 +527,7 @@ class BaysController(base.Controller):
     @wsme.validate(types.uuid, bool, [BayPatchType])
     @expose.expose(BayID, types.uuid_or_name, types.boolean,
                    body=[BayPatchType], status_code=202)
-    def patch(self, bay_ident, rollback=False, patch=None):
+    def patch(self, bay_ident, rollback=False, patch=None):  # noqa
         """Update an existing bay.
 
         :param bay_ident: UUID or logical name of a bay.
@@ -585,7 +585,7 @@ class BaysController(base.Controller):
 
     @base.Controller.api_version("1.2")  # noqa
     @expose.expose(None, types.uuid_or_name, status_code=204)
-    def delete(self, bay_ident):
+    def delete(self, bay_ident):   # noqa
         """Delete a bay.
 
         :param bay_ident: UUID of a bay or logical name of the bay.

magnum/api/controllers/v1/cluster.py

@@ -594,7 +594,7 @@ class ClustersController(base.Controller):
     @wsme.validate(types.uuid, bool, [ClusterPatchType])
     @expose.expose(ClusterID, types.uuid_or_name, types.boolean,
                    body=[ClusterPatchType], status_code=202)
-    def patch(self, cluster_ident, rollback=False, patch=None):
+    def patch(self, cluster_ident, rollback=False, patch=None):  # noqa
         """Update an existing Cluster.
 
         :param cluster_ident: UUID or logical name of a cluster.

magnum/api/controllers/v1/cluster_template.py

@@ -437,7 +437,7 @@ class ClusterTemplatesController(base.Controller):
                    body=[ClusterTemplatePatchType])
     @validation.enforce_network_driver_types_update()
     @validation.enforce_volume_driver_types_update()
-    def patch(self, cluster_template_ident, patch):
+    def patch(self, cluster_template_ident, patch):   # noqa
         """Update an existing ClusterTemplate.
 
         :param cluster_template_ident: UUID or logic name of a

magnum/common/cert_manager/local_cert_manager.py

@@ -104,7 +104,7 @@ class CertManager(cert_manager.CertManager):
         return cert_ref
 
     @staticmethod  # noqa: C901
-    def get_cert(cert_ref, **kwargs):
+    def get_cert(cert_ref, **kwargs):  # noqa: C901
         """Retrieves the specified cert.
 
         :param cert_ref: the UUID of the cert to retrieve

magnum/tests/unit/api/controllers/test_base.py

@@ -325,7 +325,7 @@ class TestController(test_base.TestCase):
                 return 'API1_1.0_1.1'
 
             @base.Controller.api_version('1.2', '1.3')  # noqa
-            def testapi1(self):
+            def testapi1(self):   # noqa
                 return 'API1_1.2_1.3'
 
             @base.Controller.api_version('2.1', '2.2')
@@ -333,7 +333,7 @@ class TestController(test_base.TestCase):
                 return 'API2_2.1_2.2'
 
             @base.Controller.api_version('1.0', '2.0')  # noqa
-            def testapi2(self):
+            def testapi2(self):  # noqa
                 return 'API2_1.0_2.0'
 
         controller = MyController()
@@ -376,7 +376,7 @@ class TestController(test_base.TestCase):
                 return 'API1_1.0_1.1'
 
             @base.Controller.api_version('1.2', '1.3')  # noqa
-            def testapi1(self):
+            def testapi1(self):  # noqa
                 return 'API1_1.2_1.3'
 
         controller = MyController()
@@ -398,7 +398,7 @@ class TestController(test_base.TestCase):
                 return 'API1_1.0_1.1'
 
             @base.Controller.api_version('1.3', '1.4')  # noqa
-            def testapi1(self):
+            def testapi1(self):  # noqa
                 return 'API1_1.3_1.4'
 
         controller = MyController()