Fix integration test workdir (#20668)
Fix integration test workdir (#20668)

I had been seeing for a while some tests would not have the full test
output we normally see. Turns out this is from a type in the flag
smawson/istio,istio/istio,smawson/istio,istio/istio,smawson/istio,istio/istio,smawson/istio,istio/istio,smawson/istio,istio/istio,smawson/istio