As is recommended by UX/DX reviews, the per-VM console virtual UART is now
limited to the following choices:
- Disabled
- a COM port from COM1 to COM4
- PCI based
This patch converts the schema of scenario XMLs to integrate this
recommendation and add logic in the scenario upgrader to migrate data from
old scenario XMLs.
v1 -> v2:
* Update the static allocators and C source transformers according to the
new console vUART config item.
Tracked-On: #6690
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
e88532b59d