[pull] master from Azure:master#1231

Merged

pull[bot] merged 4 commits intopphuchar:masterfrom

sonic-net:master

Dec 18, 2020

Commits on Dec 18, 2020

[slave-buster] Armhf sairedis build fix (#6239)
antony-rheneus
authored
[docker-ptf]: Updating Python-based GNMI client (#6216)

macikgozwa
and
Murat Acikgoz
authored
[build]: openssh: Fix build break when using http proxy (#6229)
dflynn-Nokia
authored
[device/accton] AS****_54X, validate accton util to set sfp's tx_disable (#5941)
roylee123
authored