cherry-pick socket mode base URL & geos fix - #989

cherry-pick socket mode base URL & geos fix#989

Lily Du (lilyydu) merged 8 commits into

release/v2.2microsoft/teams.ts:release/v2.2from

lilyydu/typescript-2-2-1-hotfixmicrosoft/teams.ts:lilyydu/typescript-2-2-1-hotfixCopy head branch name to clipboard