Automate un-/deployment of the self-sharding example.

examples/self-sharding/cafe.vtc

+../hello/cafe.vtc
\ No newline at end of file

examples/self-sharding/deploy.sh

+#! /bin/bash -ex
+
+kubectl apply -f ../hello/cafe.yaml
+
+kubectl apply -f ../hello/cafe-ingress.yaml
+
+kubectl apply -f self-sharding-cfg.yaml

examples/self-sharding/undeploy.sh

+#! /bin/bash -ex
+
+kubectl delete -f self-sharding-cfg.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/self-sharding/verify.sh

+../hello/verify.sh
\ No newline at end of file