generate sha for all istioctl archive (#16762)
generate sha for all istioctl archive (#16762)

* generate sha for all istioctl archive

* fix shell check

* fix file path

* change to one loop

geeknoid/istio,istio/istio,istio/istio,smawson/istio,geeknoid/istio,geeknoid/istio,geeknoid/istio,smawson/istio,istio/istio,istio/istio,istio/istio,geeknoid/istio,geeknoid/istio,smawson/istio,smawson/istio,smawson/istio,smawson/istio