Fix PrometheusRemoteWriteDesiredShards
This rule has the same labels on both sides. We don't want
`group_right` and `on`, we want nothing.
# https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details.
(
max_over_time(prometheus_remote_storage_shards_desired{%(prometheusSelector)s}[5m])
- > on(job, instance) group_right
+ >
max_over_time(prometheus_remote_storage_shards_max{%(prometheusSelector)s}[5m])
)
||| % $._config,
