#### Why I did it
On our platforms syncd must be up while using the sonic_platform.
The issue is warm-reboot script first disables syncd then instantiate Chassis, which tries to connect syncd in __init__.
#### How I did it
Refactor Chassis to lazy initialize components.
Signed-off-by: Volodymyr Boyko <volodymyrx.boiko@intel.com>
