Allow filtering livetest runs via PYTEST_MARK

[gerrod3]

Summary

• Add a PYTEST_MARK make variable to the livetest target, defaulting to live
• Plugin CI can now run only the live tests for a single component, e.g. make livetest PYTEST_MARK="live and pulp_container"

Test plan

• make livetest still runs the full live suite (default unchanged)
• make livetest PYTEST_MARK="live and pulp_container" runs only container live tests
• Update plugin CI script.sh to use the filtered invocation once this is released

Made with Cursor

[gerrod3]

The AI also suggested we could add this rule:

If you want shorter commands for common cases:

.PHONY: livetest-%
livetest-%:
	uv run $(MAKE) _livetest PYTEST_MARK="live and pulp_$*"

Then:

make livetest-container   # → live and pulp_container
make livetest-rpm         # → live and pulp_rpm

[patchback]

Backport to 0.40: 💚 backport PR created

✅ Backport PR branch: patchback/backports/0.40/1633919ff9a63320fee3999787d73eb0a171c5af/pr-1419

Backported as #1420

🤖 @patchback
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