refactor build ova for build template
refactor build ova for build template

changev/RackHD,panpan0000/RackHD,hohene/RackHD,hohene/RackHD,RackHD/RackHD,uppalk1/RackHD,RackHD/RackHD,changev/RackHD,panpan0000/RackHD,changev/RackHD,RackHD-Mirror/RackHD,changev/RackHD,uppalk1/RackHD,RackHD-Mirror/RackHD,uppalk1/RackHD,RackHD-Mirror/RackHD,panpan0000/RackHD,RackHD-Mirror/RackHD,RackHD/RackHD,RackHD/RackHD,panpan0000/RackHD,uppalk1/RackHD,hohene/RackHD,hohene/RackHD