Ingress integration (#688)

Ingress integration to allow the optional creation of ingress for a given route. The ingress controller needs to be set up by the user separately so that ingress path is accessible outside the cluster.

test/tests/test_ingress.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+set -euo pipefail
+
+ROOT=$(dirname $0)/../..
+
+relativeUrl="/itest"
+functionName="hellotest"
+hostName="test.com"
+
+cleanup() {
+    fission route delete --name $1
+}
+
+log "Creating route for URL $relativeUrl"
+route_name=$(fission route create --url $relativeUrl --function $functionName --createingress| grep trigger| cut -d" " -f 2|cut -d"'" -f 2)
+trap "cleanup $route_name" EXIT
+
+log "Route $route_name created"
+
+sleep 5
+
+log "Ingresses matching this trigger:"
+kubectl get ing -l 'functionName='$functionName',triggerName='$route_name --all-namespaces -o=json
+
+log "Verifying to route value in ingress"
+actual_route=$(kubectl -n fission get ing -l 'functionName='$functionName',triggerName='$route_name --all-namespaces -o=jsonpath='{.items[0].spec.rules[0].http.paths[0].path}')
+
+if [ $actual_route != $relativeUrl ]
+then
+    log "Provided route and route in ingress don't match"
+    exit 1
+fi
+
+log "Modifying the route by adding host"
+fission route update --name $route_name --host $hostName --function $functionName
+
+sleep 2
+
+actual_host=$(kubectl get ing -l 'functionName='$functionName',triggerName='$route_name --all-namespaces -o=jsonpath='{.items[0].spec.rules[0].host}')
+
+if [ $hostName != $actual_host ]
+then
+    log "Provided host and host in ingress don't match"
+    exit 1
+fi