Monitoring and alerts for Rococo/Westend (#2710)

* Monitoring and alerts for Rococo/Westend

* 00000001 -> 00000002

* Backup actual version

* Upload "Rococo BEEFY dashboard" from grafana (I cannot find it)

* Separated Rococo Beefy dashboard and alerts

* Group Rococo BEEFY alerts + add `Rococo` labels

* Renamed evaluation group `Bridges` -> `Bridge Rococo <> Wococo`

* Updated Wococo -> Westend dashboards

* Rococo<>Westend alerts

* Fixed matrix_room for rococo beefy

* Removed "refId": "B" for rewards lags and set condition A > 10 + fixed time range

* Delivery race dashboard from now-5m -> now-6h

* Removed rococo-wococo

* Less than 500 Westend headers have been synced to RococoBridgeHub in last 120 minutes -> 390

Author: bkontur

deployments/bridges/rococo-westend/README.md

@@ -0,0 +1,22 @@
+# Rococo Bridge Hub <> Westend Bridge Hub deployments
+
+This folder contains some information and useful stuff from our other test deployment - between Rococo and Westend
+bridge hubs. The bridge overview and other helpful information can be found in
+[this readme](https://github.com/paritytech/polkadot-sdk/tree/master/cumulus/parachains/runtimes/bridge-hubs).
+
+## Grafana Alerts and Dashboards
+
+JSON model for Grafana alerts and dashobards that we use, may be found in the [dasboard/grafana](./dashboard/grafana/)
+folder.
+
+**Dashboards:**
+- rococo-westend-maintenance-dashboard.json
+- relay-rococo-to-westend-messages-dashboard.json
+- relay-westend-to-rococo-messages-dashboard.json
+
+(exported JSON directly from https://grafana.teleport.parity.io/dashboards/f/eblDiw17z/Bridges)
+
+**Alerts:**
+- bridge-rococo-westend-alerts.json https://grafana.teleport.parity.io/api/ruler/grafana/api/v1/rules/Bridges/Bridge%20Rococo%20%3C%3E%20Westend
+
+_Note: All json files are formatted with `jq . file.json`._