merge from azure to fork#9

Merged

noaOrMlnx merged 25 commits intonoaOrMlnx:masterfrom

sonic-net:master

Aug 26, 2020

Commits on Aug 18, 2020

[BFN] Add support pcied daemon for Montara and Newport (#5199)
bratashX
authored

Commits on Aug 21, 2020

Commits on Aug 22, 2020

Add common functions applicable to single/multi asic platforms (#5224)
judyjoseph
authored

Commits on Aug 23, 2020

Commits on Aug 24, 2020

Commits on Aug 25, 2020

[enable counters] Enable port buffer drops by default and update MLNX SAI submodule (#5059)
mykolaf
authored
Platform monitor changes in daemon_base for multi_asic (#4932)
judyjoseph
authored