add scripts/generate-protos.sh to prow pre-submit (#251)
add scripts/generate-protos.sh to prow pre-submit (#251)


cloudfoundry-attic/api,istio/api,rshriram/api,istio/api,geeknoid/api,istio/api,cloudfoundry-attic/api,istio/api,geeknoid/api,rshriram/api,cloudfoundry-attic/api,rshriram/api,cloudfoundry-attic/api,geeknoid/api,geeknoid/api,cloudfoundry-attic/api