add readiness check delays for better logging

devops/azure/chart/templates/deployment.yaml

@@ -50,6 +50,8 @@ spec:
           httpGet:
             path: /api/indexer/v2/swagger-ui.html
             port: 80
+          initialDelaySeconds: 15
+          periodSeconds: 20
         volumeMounts:
         - name: azure-keyvault
           mountPath: "/mnt/azure-keyvault"