add parameter to allow redefining of server port for ingress

To allow to integrate TungstenFabric(Contrail) with Airship
there should be ability to redifine ports that can be conflicted.

Change-Id: Id15658c65339577cec03f25ebd22dd664bb5976a

ingress/templates/bin/_ingress-controller.sh.tpl

@@ -30,6 +30,7 @@ function start () {
       --https-port=${PORT_HTTPS} \
       --healthz-port=${PORT_HEALTHZ} \
       --status-port=${PORT_STATUS} \
+      --default-server-port=${DEFAULT_SERVER_PORT} \
       --election-id=${RELEASE_NAME} \
       --ingress-class=${INGRESS_CLASS} \
       --default-backend-service=${POD_NAMESPACE}/${ERROR_PAGE_SERVICE} \

ingress/templates/deployment-ingress.yaml

@@ -259,6 +259,8 @@ spec:
               value: {{ tuple "ingress" "internal" "status" . | include "helm-toolkit.endpoints.endpoint_port_lookup" | quote }}
             - name: PORT_HEALTHZ
               value: {{ tuple "ingress" "internal" "healthz" . | include "helm-toolkit.endpoints.endpoint_port_lookup" | quote }}
+            - name: DEFAULT_SERVER_PORT
+              value: {{ tuple "ingress" "internal" "server" . | include "helm-toolkit.endpoints.endpoint_port_lookup" | quote }}
             - name: RELEASE_NAME
               value: {{ .Release.Name | quote }}
             - name: ERROR_PAGE_SERVICE
@@ -281,6 +283,10 @@ spec:
             {{- if .Values.network.host_namespace }}
               hostPort: {{ tuple "ingress" "internal" "healthz" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
             {{- end }}
+            - containerPort: {{ tuple "ingress" "internal" "server" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
+            {{- if .Values.network.host_namespace }}
+              hostPort: {{ tuple "ingress" "internal" "server" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
+            {{- end }}
           command:
             - /tmp/ingress-controller.sh
             - start

ingress/values.yaml

@@ -165,6 +165,8 @@ endpoints:
         default: 10254
       status:
         default: 18080
+      server:
+        default: 8181
   ingress_exporter:
     namespace: null
     hosts: