support image type override for real in upgrade.sh script
support image type override for real in upgrade.sh script

Signed-off-by: Vishnu kannan <8c9a7175bd62235d51889a4697184181a7bcfb30@google.com>

aclisp/kubernetes,aclisp/kubernetes,Rotwang/kubernetes,aclisp/kubernetes,aclisp/kubernetes,majorleaguesoccer/kubernetes,majorleaguesoccer/kubernetes,Rotwang/kubernetes,majorleaguesoccer/kubernetes,Rotwang/kubernetes,majorleaguesoccer/kubernetes,Rotwang/kubernetes,aclisp/kubernetes,majorleaguesoccer/kubernetes,Rotwang/kubernetes