okfn -> ckan, solr 8 or 9, add 2.11 (mark experimental), Add testing direct

[duttonw]

• container okfn -> ckan
• fix tests from container swap (ensure _reset_plugin_counter() is called before testing)
• correct proxy injection as python3 ```use_proxy = 'ckan.download_proxy' in t.config; if use_proxy:`` == true which should be False/None when missing.
• downgrade setuptools for 2.9 only
• split solr version between 2.9 (solr8) rest (solr9)
• Disable CSRF WTF_CSRF_ENABLED = False on main test.ini for direct testing.
• Direct testing added (alt testing without cirunner)
• remove python2 docker-compose option from docker.sh
• Add how to run github actions locally via act plus docker

[duttonw]

had an itch and had to scratch it :).