Changed function name in header_suite's test code
Changed function name in header_suite's test code

This matches how it is accessed in the template, although not how it is
defined in the test specs. The test here is important as a way of
indicating what transformations I will have to make on the raw parsed
yaml to make it suitable for consumption by the template layer

benstreb/os-test-harness,benstreb/os-test-harness