[sonic-cfggen]:move get_machine_info function to lib#489

Merged

stcheng merged 3 commits intosonic-net:masterfrom sihuihan88:machine_info

Apr 11, 2017

Commits on Apr 7, 2017

[sonic-cfggen]:move get_machine_info to lib
Sihui Han
committed

Commits on Apr 8, 2017

[sonic-cfggen]:Add get platform info API
Sihui Han
committed

Commits on Apr 10, 2017

Create sonic_platform.py
Sihui Han
committed