Test against a single transport (#35903) (#35970)

Network integration tests can use tags to run only a specific transport
(cherry picked from commit c3523cdd60)

docs/docsite/rst/dev_guide/testing_integration.rst

@@ -219,6 +219,15 @@ To run integration tests for a specific module::
 
     ansible-test network-integration --inventory  /path/to/ansible/test/integration/inventory.networking vyos_vlan
 
+To run integration tests for a specific transport::
+
+    # Only run nxapi test
+    ansible-test network-integration --inventory  /path/to/ansible/test/integration/inventory.networking  --tags="nxapi" nxos_.*
+
+    # Skip any cli tests
+    ansible-test network-integration --inventory  /path/to/ansible/test/integration/inventory.networking  --skip-tags="cli" nxos_.*
+
+See `test/integration/targets/nxos_bgp/tasks/main.yaml <https://github.com/ansible/ansible/blob/devel/test/integration/targets/nxos_bgp/tasks/main.yaml>`_ for how this is implemented in the tests.
 
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