builder/vmware: set proper default disk type for esx
builder/vmware: set proper default disk type for esx

Kaixiang/packer,TranscendComputing/packer,Kaixiang/packer,suma/packer,suma/packer,TranscendComputing/packer,Kaixiang/packer,suma/packer,TranscendComputing/packer,Kaixiang/packer,TranscendComputing/packer,suma/packer