Split infra and workload monitoring for K8S

This change allows to enable the monitoring only for the K8S
infrastructure (default) or for both the infrastructure and the
workloads running on top of K8S.

Change-Id: Idc68576f2d64840c0454fadc204174027bbaa454

prometheus/files/prometheus.yml

@@ -98,6 +98,7 @@ scrape_configs:
 
 {%- if server.get('target', {}).get('kubernetes', {}).get('enabled', False) %}
   {%- set kubernetes_target = server.target.kubernetes %}
+
   - job_name: 'kubernetes-api'
     scheme: https
     tls_config:
@@ -116,7 +117,6 @@ scrape_configs:
       action: keep
       regex: default;kubernetes;https
 
-
   - job_name: 'kubernetes-node'
     scheme: https
     tls_config:
@@ -134,7 +134,7 @@ scrape_configs:
     - action: labelmap
       regex: __meta_kubernetes_node_label_(.+)
 
-
+  {%- if kubernetes_target.get('endpoint', {}).get('enabled') %}
   - job_name: 'kubernetes-service-endpoints'
     scheme: https
     tls_config:
@@ -179,8 +179,9 @@ scrape_configs:
     - source_labels: [__meta_kubernetes_pod_name]
       action: replace
       target_label: kubernetes_pod_name
+  {%- endif %}
 
-
+  {%- if kubernetes_target.get('pod', {}).get('enabled') %}
   - job_name: 'kubernetes-pod'
     scheme: https
     tls_config:
@@ -216,6 +217,7 @@ scrape_configs:
       action: replace
       target_label: kubernetes_pod_name
   {%- endif %}
+{%- endif %}
 
 {%- if server.get('target', {}).get('dns', {}).get('enabled', False) %}
   {%- for target in server.get('target', {}).get('dns', {}).get('endpoint', []) %}