When using a matrix project, the weather report always uses a factor of 1.0 for test results, regardless of the Health report amplification factor configured in the job.

A factor of 0 also does not disabled test health reporting as advertised.

Steps to reproduce

1. Create a new Multi-Configuration Project.
2. Add an arbitrary (e.g userdefined) axis with one or more values.
3. Add a build step that creates a JUnit result file:

   <?xml version="1.0" encoding="utf-8"?>
   <testsuites>
      <testsuite errors="0" failures="1" name="" skipped="0" tests="2">
         <testcase classname="test" name="success" />
         <testcase classname="test" name="failure">
            <failure>This test failed.</failure>
         </testcase>
      </testsuite>
   </testsuites>

4. Add Publish JUnit post-build action.
5. Set Health report amplification factor to any value other than 1.0.
6. Run the project.
7. Observe the weather report.