ReadinessProbe for OVS-DB Pod

This implementation is to add readiness probe to ovs-db pod.
The goal is to check if the db.sock is connected by executing ovs-vsctl
command to list the Open_vswitch configuration table.

Change-Id: Idd4382d95d07ffff94a30bcb7ac132b88e9d6de1

openvswitch/templates/daemonset-ovs-db.yaml

@@ -52,6 +52,15 @@ spec:
         - name: openvswitch-db
 {{ tuple $envAll "openvswitch_db_server" | include "helm-toolkit.snippets.image" | indent 10 }}
 {{ tuple $envAll $envAll.Values.pod.resources.ovs.db | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
+          readinessProbe:
+            exec:
+              command:
+                - /usr/bin/ovs-vsctl
+                - list
+                - Open_Vswitch
+            initialDelaySeconds: 90
+            periodSeconds: 30
+            timeoutSeconds: 5
           securityContext:
             runAsUser: 0
           livenessProbe: