This tool checks a guideline against a Tempest test suite
to make sure that:
* all idempotent IDs in the guideline exist in the tests
* test names in the test suite match names in the guideline
By gating against this tool in both the Interop project and in
Tempest, we can help prevent typos and catch renaming of tests.
Change-Id: I8b6778c2063eeac8b0d7c0d64127eefe420c617f