[next] nilrt-snac: add integration ptests

[amstewart]

Summary of Changes

The nilrt-snac project now has an integration test suite.

• nilrt-snac. Add a run-ptest entrypoint and pytest subpackage to run it.
• packagegroup-ni-ptest-smoke. Add the nilrt-snac-ptest package.

Justification

AB#2776057

Testing

TODO: Detail what testing has been done to ensure this submission meets requirements.

• I have built the core package feed with this PR in place. (bitbake packagefeed-ni-core)
• Tested the packagegroup on a cRIO VM.

admin@NI-cRIO-903x-VM-6ebe3712:~# ptest-runner -l
Available ptests:
nilrt-snac	/usr/lib/nilrt-snac/ptest/run-ptest
admin@NI-cRIO-903x-VM-6ebe3712:~# ptest-runner nilrt-snac
START: ptest-runner
2024-09-13T15:27
BEGIN: /usr/lib/nilrt-snac/ptest
============================= test session starts ==============================
platform linux -- Python 3.12.4, pytest-8.0.2, pluggy-1.4.0 -- /usr/bin/python3
cachedir: .pytest_cache
rootdir: /usr/lib/nilrt-snac/tests/integration
configfile: pytest.ini
collecting ... collected 9 items

../tests/integration/test_cli.py::test_help PASSED                       [ 11%]
../tests/integration/test_cli.py::test_noargs PASSED                     [ 22%]
../tests/integration/test_cli.py::test_verify PASSED                     [ 33%]
../tests/integration/test_cli.py::test_version PASSED                    [ 44%]
../tests/integration/test_installation.py::test_conflicts_ipk PASSED     [ 55%]
../tests/integration/test_installation.py::test_iptables PASSED          [ 66%]
../tests/integration/test_installation.py::test_opkg_binary PASSED       [ 77%]
../tests/integration/test_installation.py::test_supported_distro PASSED  [ 88%]
../tests/integration/test_installation.py::test_wireguard_conf PASSED    [100%]

============================== 9 passed in 0.60s ===============================
DURATION: 1
END: /usr/lib/nilrt-snac/ptest
2024-09-13T15:27
STOP: ptest-runner
TOTAL: 1 FAIL: 0

Procedure

• I certify that the contents of this pull request complies with the Developer Certificate of Origin.

[amstewart]

Patch V2

• Changed pytest RDEPENDS to += and dropped the extraneous nilrt-snac RDEPENDS.
  • Rebuilt the recipe and verified that the package dependencies include nilrt-snac.