[BUG] Running test with copr fails on response parsing

[Venefilyn]

Describe the bug
Running on devel branch with commit 21f8804 it fails after running the command
tesar test copr c2r -ref pr1022 -g github oamg main -p /plans/tier0/basic_sanity_checks -t al8

To Reproduce
Steps to reproduce the behavior:

Expected behavior
A clear and concise description of what you expected to happen.

CLI Output
If applicable, please provide the CLI output to help us with debugging the issue.

❯ tesar test copr c2r -ref pr1022 -g github oamg main -p /plans/tier0/basic_sanity_checks -t al8
INFO | Getting copr build info for referenced PR1022.
INFO | LINK: https://github.com/oamg/convert2rhel/pull/1022
INFO | Getting build ID for convert2rhel version 1.6.1-1.20240108201105810920.pr1022.10.gfd6d73c.
INFO | Built at 2024-01-08 20:11:00
INFO | LINK: https://copr.fedorainfracloud.org/coprs/g/oamg/convert2rhel/build/6873352
INFO | Assigning copr build id 6873352 for testing on AlmaLinux OS 8.8.20230524 x86_64 to test batch.
INFO | Sending test plan basic_sanity_checks for copr build pr1022 for AlmaLinux OS 8.8.20230524 x86_64 to the testing farm.

Traceback (most recent call last):
  File "/home/egustavs/code/.virtualenvs/tesar-iikm-MRO/bin/tesar", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/home/egustavs/code/.virtualenvs/tesar-iikm-MRO/lib/python3.12/site-packages/tesar/__init__.py", line 19, in main
    sys.exit(dispatch())
             ^^^^^^^^^^
  File "/home/egustavs/code/.virtualenvs/tesar-iikm-MRO/lib/python3.12/site-packages/dispatch/__main__.py", line 138, in main
    submit_test(
  File "/home/egustavs/code/.virtualenvs/tesar-iikm-MRO/lib/python3.12/site-packages/dispatch/tf_send_request.py", line 109, in submit_test
    task_id = response.json()["id"]
              ~~~~~~~~~~~~~~~^^^^^^
KeyError: 'id'

Additional context
Add any other context about the problem here.

[github-actions]

Hi, there.

Thank you @SpyTec for submitting the bug report. Someone will take a look at this shortly.

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[danmyway]

Hi @SpyTec, thank you for the report.
Sadly. I was not able to reproduce the issue on the same commit.
The only reproducer I have found is by mangling the API endpoint URL.
Which leads me to a suspicion, that the API endpoint might have been down and the request did not get posted.
I am keeping the issue open, so we can handle this case better.

[danmyway]

Additionally, when the API key is missing in the config, the traceback is the same.
@SpyTec did you have the API key set in the default ~/.config/tesar config file?

[danmyway]

Anyway, we need to check, that the API is responsive, and the API key is present in the config file.
Both should be fairly easy.
TODO @danmyway