Fix a neutron-tempest-plugin 2024.2 job definition

When we created the 2024.2 stable job definitions,
the OVS enforce-scope-new-defaults job name had 2024-1
and did not override-checkout the stable/2024.2 branch.

It did not break anything since it does not seem to be
used anywhere, but fixing anyways.

TrivialFix

Change-Id: I69f87e5f809032933507ace73476560afc0fe262
1 file changed