Streamline restatectl connection to cluster #8632

Job	Run time
Build and test (warp-ubuntu-latest-x64-16x)	3m 54s
Check workspace-hack	1m 2s
Validate Restate UI artifact	6s
Create docker image / build-and-push-image	20m 38s
Run SDK-Go integration tests / Features integration test	3m 28s
Run SDK-Java integration tests with DisableIdempotencyTable / Features integration test	6m 34s
Run SDK-Java integration tests with InvocationStatusKilled / Features integration test	6m 19s
Run SDK-Java integration tests / Features integration test	6m 19s
Run SDK-Java integration tests with KafkaIngressNext / Features integration test	6m 11s
Run SDK-Python integration tests / Features integration test	6m 29s
Run SDK-Rust integration tests / Features integration test	5m 46s
Run SDK-Typescript integration tests / Features integration test	5m 8s
	1h 11m 54s

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