prometheus-kube-state-metrics; expose readiness probe via HTK

On larger clusters the default timeout of 1s isn't enough.  Use HTK to
expose settings and adjust defaults to be suitable for larger
clusters.

Change-Id: I2336c64d20fe689a5c7f22e8fbd170a27b1a1045

prometheus-kube-state-metrics/templates/deployment.yaml

@@ -14,6 +14,12 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */}}
 
+{{- define "kubeMetricsReadinessProbe" }}
+httpGet:
+  path: /metrics
+  port: {{ tuple "kube_state_metrics" "internal" "http" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
+{{- end }}
+
 {{- if .Values.manifests.deployment }}
 {{- $envAll := . }}
 
@@ -125,12 +131,7 @@ spec:
           ports:
             - name: metrics
               containerPort: {{ tuple "kube_state_metrics" "internal" "http" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
-          readinessProbe:
-            httpGet:
-              path: /metrics
-              port: {{ tuple "kube_state_metrics" "internal" "http" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
-            initialDelaySeconds: 20
-            periodSeconds: 10
+{{ dict "envAll" . "component" "server" "container" "kube_metrics" "type" "readiness" "probeTemplate" (include "kubeMetricsReadinessProbe" . | fromYaml) | include "helm-toolkit.snippets.kubernetes_probe" | indent 10 -}}
           volumeMounts:
             - name: pod-tmp
               mountPath: /tmp

prometheus-kube-state-metrics/values.yaml

@@ -37,6 +37,15 @@ labels:
     node_selector_value: enabled
 
 pod:
+  probes:
+    server:
+      kube_metrics:
+        readiness:
+          enabled: true
+          params:
+            initialDelaySeconds: 30
+            periodSeconds: 60
+            timeoutSeconds: 10
   security_context:
     exporter:
       pod: