RabbitMQ Exporter: Replace Direct Values w/ HTK

This change replaces direct references to the exporter port
in values.yaml with calls to helm-toolkit lookup functions.

The referenced port number under the network key is removed,
as the helm-toolkit function will return the port number under
the endpoints key.

Change-Id: Ib6f533c49af5a88fca377920d28d5468d7387892

rabbitmq/templates/monitoring/prometheus/exporter-deployment.yaml

@@ -52,7 +52,7 @@ spec:
 {{ dict "envAll" $envAll "application" "exporter" "container" "rabbitmq_exporter" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
           ports:
             - name: metrics
-              containerPort: {{ $envAll.Values.network.prometheus_rabbitmq_exporter.port }}
+              containerPort: {{ tuple "prometheus_rabbitmq_exporter" "internal" "metrics" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
           env:
           - name: RABBIT_URL
             value: http://{{ tuple "oslo_messaging" "internal" . | include "helm-toolkit.endpoints.hostname_fqdn_endpoint_lookup" }}:15672
@@ -63,7 +63,7 @@ spec:
           - name: RABBIT_CAPABILITIES
             value: {{ include "helm-toolkit.utils.joinListWithComma" $envAll.Values.conf.prometheus_exporter.capabilities | quote }}
           - name: PUBLISH_PORT
-            value: {{ $envAll.Values.network.prometheus_rabbitmq_exporter.port | quote }}
+            value: {{ tuple "prometheus_rabbitmq_exporter" "internal" "metrics" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
           - name: LOG_LEVEL
             value: {{ $envAll.Values.conf.prometheus_exporter.log_level | quote }}
           - name: SKIPVERIFY

rabbitmq/templates/monitoring/prometheus/exporter-service.yaml

@@ -31,7 +31,7 @@ metadata:
 spec:
   ports:
   - name: metrics
-    port: {{ $envAll.Values.network.prometheus_rabbitmq_exporter.port }}
+    port: {{ tuple "prometheus_rabbitmq_exporter" "internal" "metrics" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
   selector:
 {{ tuple $envAll "prometheus_rabbitmq_exporter" "exporter" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
 {{- end }}

rabbitmq/values.yaml

@@ -226,8 +226,6 @@ network:
         cluster: "nginx-cluster"
       annotations:
         nginx.ingress.kubernetes.io/rewrite-target: /
-  prometheus_rabbitmq_exporter:
-    port: 9095
 
 # typically overridden by environmental
 # values, but should include all endpoints