* Updated tests to support -UserAuth test resources switch to enable non-corpnet access.
* Try setting sample environment variables in sample script pipeline
* SetPolicy and ResetPolicy APIs
* Added tests for attestation result; cleaned up attest test suite a bit; fixed up attestation sample to be more real
* Further refactored test collateral to reduce wasted test cases
* Reformat with clang-format-11
* Removed use of Nullable::HasValue() and Nullable::Value() in favor of operator bool and operator *
* Get policy sample to run in CI pipeline
* Added AZURE_ variables to test-resources.json
