Additional port-related RBAC tests

Adds extra port-related RBAC tests to ``test_ports_rbac`` in the
network module, providing coverage for the following policy
actions:
    * create_port:device_owner
    * create_port:port_security_enabled
    * create_port:binding:profile
    * update_port:device_owner

Adds ``test.requires_ext`` above tests that require the ``binding``
extension (because it provides extra functionality
not accessible if disabled [0]).

[0] https://developer.openstack.org/api-ref/networking/v2/#ports

Change-Id: I42d59a2c2d088159d168d3067a133d32ac7f1c00
diff --git a/releasenotes/notes/additional-network-ports-rbac-tests-3f48ce1b6bda7694.yaml b/releasenotes/notes/additional-network-ports-rbac-tests-3f48ce1b6bda7694.yaml
new file mode 100644
index 0000000..a75db95
--- /dev/null
+++ b/releasenotes/notes/additional-network-ports-rbac-tests-3f48ce1b6bda7694.yaml
@@ -0,0 +1,13 @@
+---
+features:
+  - |
+    Add additional port-related RBAC tests to ``test_ports_rbac`` in the
+    network module, providing coverage for the following policy actions:
+    * create_port:device_owner
+    * create_port:port_security_enabled
+    * create_port:binding:profile
+    * update_port:device_owner
+fixes:
+  - |
+    Add ``test.requires_ext`` above tests that require the ``binding``
+    extension.