[AppConfig]Fix key vault client initialization#15826

Merged

bim-msft merged 4 commits intoAzure:devfrom

shenmuxiaosen:user/shuai/msi

Nov 9, 2020

Commits on Nov 6, 2020

fix key vault client initialization
shenmuxiaosen
committed

Commits on Nov 7, 2020

Commits on Nov 8, 2020

fix styling
shenmuxiaosen
committed