Function k8s_e2e_tests::metrics::wait_for_vector_started

pub async fn wait_for_vector_started(
    url: &str,
    next_attempt_delay: Duration,
    deadline: Instant,
) -> Result<(), Box<dyn Error>>

This helper function performs HTTP requests to the specified URL and waits for the presence of vector_started-ish metric until the deadline with even delays between attempts.