Release v1.4

- Fix ACRN bootloader not clean up issue.
- Add board_name and scenario variants use the right ACRN efi image.
- Add new parameter to set up ACRN as industry scenario.

Release v1.3

- Use "clr-boot-manager" tool to set up ACRN kernel.

Release v0.8

- Support Service VM and User VM upgrading.