Update static Authenticator tests to use attestation.jar generated tests

[jot2re]

After the completion of issue #280 a dump of valid keys and attestations are stored in build/test-results. These can be used in liu of the hardcoded tests in main.spec.ts to test the Authenticator solutions. This has both the advantage of validating interpretability between Attestation.jar and Authenticator, but also ensure that new static test material does not need to be generated all the time, when the design changes or when the attestations get past their life-time.