Bump werkzeug from 0.14.1 to 0.15.3 in /samples/bookinfo/src/productpage#1

dependabot[bot] wants to merge 1 commit intomasterhuamichaelchen/istio:masterfrom

dependabot/pip/samples/bookinfo/src/productpage/werkzeug-0.15.3huamichaelchen/istio:dependabot/pip/samples/bookinfo/src/productpage/werkzeug-0.15.3Copy head branch name to clipboard