Add support for tfplan.json report

What does this MR do?

Add support for tfplan.json report

Added support for terraform report type in ci yml. This is a special json file added as a part of !26830 (merged) to handle showing terraform results in merge requests

Relates to #207527 (closed)

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required) Docs will happen with #207530 (closed)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content

Availability and Testing

Needs testing with gitlab-runner to make sure things are kosher there.

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• [-] Tested in all supported browsers
• [-] Informed Infrastructure department of a default or new setting change, if applicable per definition of done