Add tempest plugins to the denylist

As per discussions:
- https://meetings.opendev.org/irclogs/%23openstack-qa/%23openstack-qa.2025-10-14.log.html
- https://review.opendev.org/c/openstack/requirements/+/963685/comments/cfdad27f_92ae83a9

Needed-By: https://review.opendev.org/c/openstack/manila-tempest-plugin/+/952368
Co-authored-by: : Kiran Pawar <kinpaa@gmail.com>
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Change-Id: Ica744e13a8fea271c3838bd5cb43c90cdb7d7c55

denylist.txt

@@ -50,6 +50,31 @@ molecule-plugins
 # Once any stable branch move to 'Extended Maintenance' and we pin the
 # older Tempest to test them then we can move it from here to u-c file.
 tempest
+barbican_tempest_plugin
+blazar_tempest_plugin
+cinder_tempest-plugin
+cloudkitty_tempest_plugin
+cyborg_tempest-plugin
+designate_tempest-plugin
+freezer_tempest_plugin
+glance_tempest-plugin
+heat_tempest-plugin
+ironic_tempest-plugin
+keystone_tempest_plugin
+magnum_tempest_plugin
+manila_tempest-plugin
+mistral_tempest_tests
+monasca_tempest-plugin
+neutron_tempest-plugin
+octavia_tempest-plugin
+telemetry_tempest_plugin
+trove_tempest_plugin
+venus_tempest-plugin
+vitrage_tempest-plugin
+watcher_tempest-plugin
+whitebox_tempest-plugin
+zaqar_tempest_plugin
+zun_tempest-plugin
 
 # annoying from setuptools
 pkg_resources