Add Ingress host, path and annotations support (#1325)

For each ingress controller, the format of ingress host,
path and annotations are different. To support different
kinds of controller, this PR adds new ingress config field
to http trigger spec. A user can set annotations, host and
path based on the type of underlying ingress controller
with CLI.

Command example:

fission route create --name foo \
    --url /foo/{bar} --function foofn --createingress \
    --ingressannotation "nginx.ingress.kubernetes.io/ssl-redirect=false" \
    --ingressannotation "nginx.ingress.kubernetes.io/use-regex=true" \
    --ingressrule "*=/foo/*"

test/test_utils.sh

@@ -65,6 +65,20 @@ setupCIBuildEnv() {
     export PRE_UPGRADE_CHECK_IMAGE=$REPO/pre-upgrade-checks
 }
 
+setupIngressController() {
+    # set up NGINX ingress controller
+    kubectl create clusterrolebinding cluster-admin-binding --clusterrole cluster-admin --user $(gcloud config get-value account) || true
+    kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/nginx-0.25.1/deploy/static/mandatory.yaml || true
+    kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/nginx-0.25.1/deploy/static/provider/cloud-generic.yaml || true
+}
+
+removeIngressController() {
+    # set up NGINX ingress controller
+    kubectl delete clusterrolebinding cluster-admin-binding || true
+    kubectl delete -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/nginx-0.25.1/deploy/static/mandatory.yaml || true
+    kubectl delete -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/nginx-0.25.1/deploy/static/provider/cloud-generic.yaml || true
+}
+
 build_and_push_go_mod_cache_image() {
     image_tag=$1
     travis_fold_start go_mod_cache_image $image_tag
@@ -195,9 +209,13 @@ set_environment() {
     id=$1
     ns=f-$id
 
+    # fission env
     export FISSION_URL=http://$(kubectl -n $ns get svc controller -o jsonpath='{...ip}')
     export FISSION_ROUTER=$(kubectl -n $ns get svc router -o jsonpath='{...ip}')
     export FISSION_NATS_STREAMING_URL="http://defaultFissionAuthToken@$(kubectl -n $ns get svc nats-streaming -o jsonpath='{...ip}:{.spec.ports[0].port}')"
+
+    # ingress controller env
+    export INGRESS_CONTROLLER=$(kubectl -n ingress-nginx get svc ingress-nginx -o jsonpath='{...ip}')
 }
 
 generate_test_id() {
@@ -273,10 +291,9 @@ dump_tiller_logs() {
 export -f dump_tiller_logs
 
 wait_for_service() {
-    id=$1
+    ns=$1
     svc=$2
 
-    ns=f-$id
     while true
     do
 	     ip=$(kubectl -n $ns get svc $svc -o jsonpath='{...ip}')
@@ -291,9 +308,11 @@ export -f wait_for_service
 
 wait_for_services() {
     id=$1
+    ns=f-$id
 
-    wait_for_service $id controller
-    wait_for_service $id router
+    wait_for_service $ns controller
+    wait_for_service $ns router
+    wait_for_service "ingress-nginx" ingress-nginx
 
     echo Waiting for service is routable...
     sleep 30
@@ -339,23 +358,6 @@ port_forward_services() {
         xargs -I{} kubectl port-forward {} $port:$port -n $ns &
 }
 
-wait_for_service() { 
-    id=$1 
-    svc=$2 
-  
-    ns=f-$id 
-    while true 
-        do 
-        ip=$(kubectl -n $ns get svc $svc -o jsonpath='{...ip}') 
-        if [ ! -z $ip ] 
-        then 
-            break 
-        fi 
-        echo Waiting for service $svc... 
-        sleep 1 
-    done 
- } 
-
 dump_builder_pod_logs() {
     bns=$1
     builderPods=$(kubectl -n $bns get pod -o name)
@@ -600,6 +602,8 @@ install_and_test() {
 	    exit 1
     fi
 
+    setupIngressController
+
     timeout 150 bash -c "wait_for_services $id"
     timeout 120 bash -c "check_gitcommit_version"
     set_environment $id
@@ -607,14 +611,15 @@ install_and_test() {
     run_all_tests $id $imageTag
 
     dump_logs $id
+    removeIngressController
 
-# Commented out due to Travis-CI log length limit
-#    if [ $FAILURES -ne 0 ]
-#    then
-#        # describe each pod in fission ns and function namespace
-#        describe_all_pods $id
-#	    exit 1
-#    fi
+    if [ $FAILURES -ne 0 ]
+    then
+        # Commented out due to Travis-CI log length limit
+        # describe each pod in fission ns and function namespace
+        # describe_all_pods $id
+	      exit 1
+    fi
 }