Automate un-/deployment & test of the custom VCL example.

examples/custom-vcl/cafe.vtc

+# looks like -*- vcl -*-
+
+varnishtest "cafe example, custom VCL"
+
+client c1 -connect "${localhost} ${localport}" {
+	txreq -url /coffee -hdr "Host: cafe.example.com"
+	rxresp
+	expect resp.status == 200
+	expect resp.http.Backend ~ {^vk8s_default_2f_coffee-svc_\d+_\d+_\d+_\d+$}
+	expect resp.http.Hello == "world"
+	expect resp.body ~ "(?m)^Server name: coffee-[a-z0-9]+-[a-z0-9]+$"
+} -run

examples/custom-vcl/deploy.sh

+#! /bin/bash -ex
+
+kubectl apply -f ../hello/cafe.yaml
+
+kubectl apply -f ../hello/cafe-ingress.yaml
+
+kubectl apply -f custom-vcl.yaml

examples/custom-vcl/undeploy.sh

+#! /bin/bash -ex
+
+kubectl delete -f custom-vcl.yaml
+
+kubectl delete -f ../hello/cafe-ingress.yaml
+
+kubectl delete -f ../hello/cafe.yaml
+
+echo "Waiting until varnish-ingress Pods are not ready"
+
+N=0
+until [ $N -ge 120 ]
+do
+    if kubectl get pods -l app=varnish-ingress | grep -q ' 1/1'; then
+        sleep 10
+        N=$(( N + 10 ))
+        continue
+    fi
+    exit 0
+done
+echo "Giving up"
+exit 1

examples/custom-vcl/verify.sh

+#! /bin/bash -ex
+
+function killforward {
+    kill $KUBEPID
+}
+
+LOCALPORT=${LOCALPORT:-8888}
+
+kubectl wait --timeout=2m pod -l app=varnish-ingress --for=condition=Ready
+
+kubectl port-forward svc/varnish-ingress ${LOCALPORT}:80 >/dev/null &
+KUBEPID=$!
+trap killforward EXIT
+
+sleep 1
+varnishtest ${TESTOPTS} -Dlocalport=${LOCALPORT} cafe.vtc