Add ReadinessProbe for mysql container (FINERACT-1292)

kubernetes/fineractmysql-deployment.yml

@@ -99,6 +99,15 @@ spec:
               command: ["sh","-c","mysqladmin ping -h localhost -uroot -p${MYSQL_ROOT_PASSWORD}"]
             failureThreshold: 10
             timeoutSeconds: 10
+          readinessProbe:
+            exec:
+              command:
+                - sh
+                - -c
+                - mysqladmin ping -uroot -p${MYSQL_PASSWORD}
+            failureThreshold: 10
+            initialDelaySeconds: 5
+            periodSeconds: 5
           ports:
             - containerPort: 3306
               name: fineractmysql