valdiations CLI role reports issues with 'rc' variable contents

The task is passing, but we need to get hold of this anyway. Having potentially broken syntax in our CI isn't good for anybody.

Trace:
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2022-12-01 06:32:49.519488 | primary | TASK [validations : set fact for run_results] **********************************
2022-12-01 06:32:49.519508 | primary | Thursday 01 December 2022 06:32:49 -0500 (0:00:00.045) 1:45:54.641 *****
2022-12-01 06:32:49.544295 | 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"}