Adding a configuration option for topic-subscription validation. #29
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When we are using existing topic/subscription is GCP, we might want to create a Subscriber by only using a subscription name, while passing empty string for the topic. Unfortunately, this is not possible because the
existingSubscription
validated if the subscription and topic are attached together at the GCP level. Adding this option will disable that check.Another option would be to skip the check if the topic value is empty string, but that seems a bit more obscure knowledge, hence I went the config option route.