Negative tests for VF validations are being needlessly iterated over polluting logs

[Jiri Podivin]

Validations executed for components don't have negative complements defined,
causing the "Run negative validation tests" to loop needlessly over them,
filling the log with ignored syntax errors.

Trace:
------
2022-06-06 16:51:51.399343 | primary | TASK [validations : Run negative validation tests] *****************************
2022-06-06 16:51:51.399363 | primary | Monday 06 June 2022 16:51:51 -0400 (0:00:00.033) 0:46:37.196 ***********
2022-06-06 16:51:51.503012 | primary | included: /usr/share/ansible/roles/validations/tasks/run.yaml for undercloud => (item={'key': 'undercloud-process-count', 'value': {'extra_args': '', 'extra_env_args': ''}})
2022-06-06 16:51:51.505110 | primary | included: /usr/share/ansible/roles/validations/tasks/run.yaml for undercloud => (item={'key': 'tripleo-latest-packages-version', 'value': {'extra_args': '', 'extra_env_args': ''}})
2022-06-06 16:51:51.506995 | primary | included: /usr/share/ansible/roles/validations/tasks/run.yaml for undercloud => (item={'key': 'check-for-dangling-images', 'value': {'extra_args': '', 'extra_env_args': ''}})
2022-06-06 16:51:51.523826 | primary |
2022-06-06 16:51:51.523865 | primary | TASK [validations : Set fact for extra args.] **********************************
2022-06-06 16:51:51.523882 | primary | Monday 06 June 2022 16:51:51 -0400 (0:00:00.124) 0:46:37.320 ***********
2022-06-06 16:51:51.546098 | primary | skipping: [undercloud]
2022-06-06 16:51:51.561181 | primary |
2022-06-06 16:51:51.561218 | primary | TASK [validations : Execute Validations undercloud-process-count] **************
2022-06-06 16:51:51.561256 | primary | Monday 06 June 2022 16:51:51 -0400 (0:00:00.037) 0:46:37.357 ***********
2022-06-06 16:51:51.586054 | primary | skipping: [undercloud]
2022-06-06 16:51:51.601286 | primary |
2022-06-06 16:51:51.601314 | primary | TASK [validations : set fact for run_results] **********************************
2022-06-06 16:51:51.601371 | primary | Monday 06 June 2022 16:51:51 -0400 (0:00:00.040) 0:46:37.398 ***********
2022-06-06 16:51:51.625487 | primary | fatal: [undercloud]: FAILED! => {"msg": "The conditional check 'run_results.rc != expected_rc' failed. The error was: error while evaluating conditional (run_results.rc != expected_rc): 'dict object' has no attribute 'rc'\n\nThe error appears to be in '/usr/share/ansible/roles/validations/tasks/run.yaml': line 26, column 7, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n - name: set fact for run_results\n ^ here\n"}
2022-06-06 16:51:51.625535 | primary | ...ignoring