AZP: add stable-2.12 to test matrix

[Andersson007]

SUMMARY

stable-2.12 has been recently branched

[Andersson007]

hmm. I added pip install pika and it has been installed but the module failed anyway

2021-10-13T08:01:03.3940872Z 00:47 TASK [setup_rabbitmq : Install pika] *******************************************
2021-10-13T08:01:05.0515844Z 00:49 �[0;33mchanged: [testhost] => {"changed": true, "cmd": ["/usr/bin/python3.8", "-m", "pip.__main__", "install", "pika"], "name": ["pika"], "requirements": null, "state": "present", "stderr": "", "stderr_lines": [], "stdout": "Collecting pika\n  Downloading pika-1.2.0-py2.py3-none-any.whl (154 kB)\nInstalling collected packages: pika\nSuccessfully installed pika-1.2.0\n", "stdout_lines": ["Collecting pika", "  Downloading pika-1.2.0-py2.py3-none-any.whl (154 kB)", "Installing collected packages: pika", "Successfully installed pika-1.2.0"], "version": null, "virtualenv": null}�[0m

[Andersson007]

now it's

The full traceback is:
04:32 Traceback (most recent call last):
04:32   File "/tmp/ansible_rabbitmq_publish_payload_0zra7rlv/ansible_rabbitmq_publish_payload.zip/ansible_collections/community/rabbitmq/plugins/module_utils/rabbitmq.py", line 22, in <module>
04:32     import pika
04:32   File "/usr/local/lib/python3.8/dist-packages/pika/__init__.py", line 8, in <module>
04:32     from pika.connection import ConnectionParameters
04:32   File "/usr/local/lib/python3.8/dist-packages/pika/connection.py", line 5, in <module>
04:32     import urlparse
04:32 ModuleNotFoundError: No module named 'urlparse'
...
"msg": "Failed to import the required Python library (pika) on c454cf8a292b's Python /usr/bin/python3.8. Please read the module documentation and install it in the appropriate location. If the required library is installed, but Ansible is using the wrong Python interpreter, please consult the documentation on ansible_python_interpreter"

[Andersson007]

pika 0.13.1 works locally

[Andersson007]

there are also problems with fetching the keys, so I commented those steps and allowed unauthorized apt installations

[Andersson007]

I disabled testing against devel and 2.12 on Ubuntu 1804, see #104

[cognifloyd]

Some questions

[Andersson007]

@cognifloyd i've just checked it again - same non informative error. Without this the tests will not work. Can we merge this PR? If someone can suggest a better solution now, I'd be happy to review and close this one:)

[cognifloyd]

Oh sorry. I forgot about this. Rechecking now...

[Andersson007]

@cognifloyd fixed, PTAL

[Andersson007]

@cognifloyd thanks for reviewing and merging!