[Mellanox]Add new Mellanox platform device data#1850

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wangxin merged 2 commits intosonic-net:masterfrom

keboliu:mellanox-data

Jul 8, 2020

Commits on Jul 6, 2020

[Mellanox]Add new Mellanox platform device data
keboliu
committed

Commits on Jul 7, 2020

Update warm_reboot and fast_reboot field according to real situation
keboliu
committed