Commit 4cf3907ab4e47bdc81866eeb8a301a010e2fd9c1

Patrick Steinhardt 2018-10-12T12:08:32

ci: use templates for VSTS builds Our build YAML is becoming unweildly and full of copy-pasta. Simplify with templates. (cherry picked from commit 6b2d8f09bc9e5bdf74f98b7470ebc39436be600f)