switch to 2019-04-01 api version and enable windows agent pool#612

Merged

tjprescott merged 6 commits intoAzure:masterfrom xizha162:xizha-0401private

Apr 4, 2019

+5,333-20

Commits on Apr 4, 2019

fixing az support for agent pools and mc
xizha
committed
vendor in 2019-04-01 SDK
xizha
committed
enableing windows profile
xizha
committed
merge the latest official SDK
xizha
committed
add secure prompt for windows admin password
xizha
committed
fixing warnings
xizha
committed