Fix validate_ca_consistency with custom ingress selector (#335)
Fix validate_ca_consistency with custom ingress selector (#335)

The current validate_ca_consistency() function breaks 
if using a custom ingress gateway selector while the default 
ingress gateway is disabled. Changing the kubectl filter to 
label app=istio-ingressgateway resolves the issue.
GoogleCloudPlatform/anthos-service-mesh-packages