Add Liveness/Readiness probe to calico-etcd.

This commit is to add liveness probe to calico-etcd-anchor pod
and both liveness/readiness probe to calico-etcd pod.

Change-Id: I2f856fa9d73152073accd753e715558457ff59e2

charts/etcd/templates/etc/_kubernetes-etcd.yaml.tpl

@@ -98,6 +98,16 @@ spec:
           value: https://$(POD_IP):{{ .Values.network.service_peer.target_port }}
         - name: MANIFEST_PATH
           value: /manifests/{{ .Values.service.name }}.yaml
+      readinessProbe:
+        exec:
+          command:
+             - /tmp/bin/readiness
+{{ toYaml .Values.readinessProbe.config | indent 8 }}
+      livenessProbe:
+        exec:
+          command:
+             - /tmp/bin/readiness
+{{ toYaml .Values.livenessProbe.config | indent 8 }}
       volumeMounts:
         - name: data
           mountPath: /var/lib/etcd

charts/etcd/values.yaml

@@ -143,6 +143,18 @@ pod:
           memory: "128Mi"
           cpu: "100m"
 
+livenessProbe:
+  config:
+    failureThreshold: 10
+    initialDelaySeconds: 15
+    periodSeconds: 30
+
+readinessProbe:
+  config:
+    failureThreshold: 10
+    initialDelaySeconds: 15
+    periodSeconds: 30
+
 jobs:
   etcd_backup:
     cron: "0 */12 * * *"