Currently the example components in integration test framework are using dummy sleep to prepare readiness. We should have a better way to check availability.

Based on the doc: https://docs.google.com/document/d/1-wNg8iLegc6Y30oVK15RTf0mwaj2H_Ik5JV1YoMOJo0/edit#heading=h.b4g68nknmjjj