acrn-config: generate launch script file and apply to the souce file

1. generate launch script file and apply to the source file

usage: launch_cfg_gen.py [h]--board <board_info_file> --scenario <scenario_info_file>
		--launch <launch_info_file> --uosid <uosid id>
board_info_file :  file name of the board info
scenario_info_file :  file name of the scenario info
launch_info_file :  file name of the launch info
uosid :  the uos id which to launch:[0..max uos id]

sample:
    $ python3 launch_cfg_gen.py --board ../xmls/board-xmls/apl-mrb.xml
      --scenario ../xmls/config-xmls/apl-mrb/sdc.xml
      --launch ../xmls/launch_config/mrb_launch.xml --uosid 0

v1-v2:
    1). usage: '--vm' -> '--uosid'
    2). add 'uuid' option for acrn-dm
    3). support parse tag from 'rootfs' to 'rootfs_dev'
    4). support parse tag from 'hard_rtos' to 'Preempt-Rt Linux'
    5). support pasre tag from 'redirect_console' to 'console_type'
    6). add 'nvme' passthrough option
    7). modify uos_type to upper string in webUI
    8). support to generate launch file by uosid, this map to scenario
id

Tracked-On: #3602
Signed-off-by: Wei Liu <weix.w.liu@intel.com>
Acked-by: Terry Zou <terry.zou@intel.com>

Author: Wei Liu