[Mellanox] Backporting reboot cause to 201811#3198

Merged

lguohan merged 5 commits intosonic-net:201811from

stephenxs:backporting-rebootcause

Jul 23, 2019

Commits on Jul 12, 2019

backport new platform api to 201811, reboot cause part
Stephen Sun
committed

Commits on Jul 14, 2019

install new platform api on host
Stephen Sun
committed

Commits on Jul 16, 2019

1. remove chassis's dependency on sonic_platform_daemon.
Stephen Sun
committed
1. add dependency of sonic_platform for base image
Stephen Sun
committed

Commits on Jul 22, 2019

adjust log message.
Stephen Sun
committed