Add Kubernetes 1.12.0 to VHD image (#3942)
Add Kubernetes 1.12.0 to VHD image (#3942)


Azure/acs-engine,Azure/acs-engine,jackfrancis/acs-engine,jackfrancis/acs-engine,jackfrancis/acs-engine,Azure/acs-engine,jackfrancis/acs-engine,jackfrancis/acs-engine,Azure/acs-engine,Azure/acs-engine