QemuQ35Pkg: Integrate TPM Replay feature

[makubacki]

Closes #677

Description

This feature enables experimentation with controlling the TPM
measurements made by firmware. It allows a developer to craft
a TPM event log and have the replayed during boot. It is disabled
by default.

General feature information is available in its readme:

https://github.com/microsoft/mu_plus/blob/HEAD/TpmTestingPkg/TpmReplayPei/Readme.md

It is currently only planned to be used QemuQ35Pkg. It could be
enabled in QemuSbsaPkg in the future if there is interest.

Details about the feature in the context of QEMU, are described in
Platforms/Docs/Q35/Features/feature_tpm_replay.md in this change.

• Impacts functionality?
  • Functionality - Does the change ultimately impact how firmware functions?
  • Examples: Add a new library, publish a new PPI, update an algorithm, ...
• Impacts security?
  • Security - Does the change have a direct security impact on an application,
    flow, or firmware?
  • Examples: Crypto algorithm change, buffer overflow fix, parameter
    validation improvement, ...
• Breaking change?
  • Breaking change - Will anyone consuming this change experience a break
    in build or boot behavior?
  • Examples: Add a new library class, move a module to a different repo, call
    a function in a new library class in a pre-existing module, ...
• Includes tests?
  • Tests - Does the change include any explicit test code?
  • Examples: Unit tests, integration tests, robot tests, ...
• Includes documentation?
  • Documentation - Does the change contain explicit documentation additions
    outside direct code modifications (and comments)?
  • Examples: Update readme file, add feature readme file, link to documentation
    on an a separate Web page, ...

How This Was Tested

• Input YAML to binary
• Input JSON to binary
• Input binary to YAML
• Replay events on QEMU Q35 to PCRs
• Verify event log in OS against the input file

Integration Instructions

See feature_tpm_replay.md.

Enable the feature in QemuQ35Pkg in the DSC file:

  DEFINE TPM_REPLAY_ENABLED = TRUE

Or, as a stuart_build argument:

> stuart_build -c Platforms/QemuQ35Pkg/PlatformBuild.py --flashrom TOOL_CHAIN_TAG=GCC5 BLD_*_TPM_ENABLE=TRUE \
               BLD_*_TPM_ENABLE=TRUE TPM_DEV=/tmp/mytpm1/swtpm-sock

Then, follow instructions to create the TPM Replay
event log and load it.