Add metrics_path label to kubelet servicemonitor endpoints (#277)

* Add metrics_path label to kubelet servicemonitor endpoints

* Set kubelet metric_path label in jsonnet

* Add generated kubelet servicemonitor

manifests/prometheus-serviceMonitorKubelet.yaml

@@ -11,6 +11,10 @@ spec:
     honorLabels: true
     interval: 30s
     port: https-metrics
+    relabelings:
+    - sourceLabels:
+      - __metrics_path__
+      targetLabel: metrics_path
     scheme: https
     tlsConfig:
       insecureSkipVerify: true
@@ -24,6 +28,10 @@ spec:
       - __name__
     path: /metrics/cadvisor
     port: https-metrics
+    relabelings:
+    - sourceLabels:
+      - __metrics_path__
+      targetLabel: metrics_path
     scheme: https
     tlsConfig:
       insecureSkipVerify: true