[Broadcom]: Update SAI version to 3.0.3.2-4#983

Merged

stcheng merged 2 commits intosonic-net:masterfrom

stcheng:broadcom

Sep 26, 2017

Commits on Sep 22, 2017

[Broadcom]: Update SAI version to 3.0.3.2-3
Shu0T1an ChenG
committed

Commits on Sep 25, 2017

[Broadcom]: Update libsai version to 3.0.3.2-4
Shu0T1an ChenG
committed