Add configurable metrics_path for monitoring_endpoints

docs/configuration.md

@@ -212,6 +212,8 @@ Prometheus to find the service endpoints. This can only have the value
 
 `scheme`: HTTP scheme for the service endpoint. The default is *https*.
 
+`metrics_path`: Path for metrics if different from the default of `/metrics`.
+
 ### Global traffic routing
 
 Services can define *public* HTTP and TCP endpoints, that will be

roles/prometheus/templates/prometheus.yml.j2

@@ -50,6 +50,9 @@
 {% macro job_service_config(service_name, target_config) %}
   - job_name: "{{ target_config.get('job_name', service_name) }}"
     scheme: "{{ target_config.get('scheme', 'https') }}"
+{% if target_config.get('metrics_path') %}
+    metrics_path: "{{ target_config['metrics_path'] }}"a
+{% endif %}
 {% if target_config.get('scheme', 'https') == 'https' %}
     tls_config:
       ca_file: /etc/credentials/x509/prometheus/ca.pem