Add istio monitoring config

ansible/k8s/components/monitoring/components/istio/istio-components-serviceMonitor.yaml

+# https://github.com/istio/istio/blob/master/samples/addons/extras/prometheus-operator.yaml
+
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: istio-components
+  namespace: istio-system
+  labels:
+    monitoring: istio-components
+    release: istio
+spec:
+  jobLabel: istio
+  targetLabels: [app]
+  selector:
+    matchExpressions:
+    - {key: istio, operator: In, values: [pilot]}
+  namespaceSelector:
+    any: true
+  endpoints:
+  - port: http-monitoring
+    interval: 15s
\ No newline at end of file

ansible/k8s/components/monitoring/components/istio/istio-envoy-stats-serviceMonitor.yaml

+# https://github.com/istio/istio/blob/master/samples/addons/extras/prometheus-operator.yaml
+
+apiVersion: monitoring.coreos.com/v1
+kind: PodMonitor
+metadata:
+  name: istio-envoy-stats
+  namespace: istio-system
+  labels:
+    monitoring: istio-proxies
+    release: istio
+spec:
+  selector:
+    matchExpressions:
+    - {key: istio-prometheus-ignore, operator: DoesNotExist}
+  namespaceSelector:
+    any: true
+  jobLabel: envoy-stats
+  podMetricsEndpoints:
+  - path: /stats/prometheus
+    interval: 15s
+    relabelings:
+    - action: keep
+      sourceLabels: [__meta_kubernetes_pod_container_name]
+      regex: "istio-proxy"
+    - action: keep
+      sourceLabels: [__meta_kubernetes_pod_annotationpresent_prometheus_io_scrape]
+    - sourceLabels: [__address__, __meta_kubernetes_pod_annotation_prometheus_io_port]
+      action: replace
+      regex: ([^:]+)(?::\d+)?;(\d+)
+      replacement: $1:$2
+      targetLabel: __address__
+    - action: labeldrop
+      regex: "__meta_kubernetes_pod_label_(.+)"
+    - sourceLabels: [__meta_kubernetes_namespace]
+      action: replace
+      targetLabel: namespace
+    - sourceLabels: [__meta_kubernetes_pod_name]
+      action: replace
+      targetLabel: pod_name