Why I did it
"chassis_db_init" task of PMON should be skipped on Mellanox simx platform, since the hardware info which this task is trying to access is not available on simx platforms, It will introduce some error log.
How I did it
Add the capability for "chassis_db_init" in the template for it can be skipped by adding configuration in "pmon_daemon_control.json".
add "skip_chassis_db_init" configuration for simx platforms.
use symbol link for "pmon_daemon_control.json" since all the simx platforms share the same configuration
How to verify it
Build an image and install it on simx platform to check whether "chassis_db_init" task is skipped.
Signed-off-by: Kebo Liu <kebol@nvidia.com>
#### Why I did it
Add initial support of SN4800 platform for Mellanox ASIC simulation device.
NOTE: This is work in progress and not full support of the platform.
#### How I did it
Add new folders for SN4800 with zero ports based on SN4700 Spectrum-3 switch.
