testing, docs and plugin updates for rc2 - cleanup leftover avocado bits from functional test - ensure we keep functional logs for tests - improve test console handling to detect prompts - remove hacking timer.sleep() usage in functional tests - convert Aarch64 tuxrun tests to functional test - update Aarch64 tuxrun images to avoid corrupt blk I/O ops - auto-generate the TCG plugin API symbols to avoid missing them - fix rust pl011 model handling of DeviceID regs - update docs to refer to "commonly known identity" - convert aspeed tests to functional framework and remove hacky sleeps