grafana: make alerts better for fux

resources/chaosknoten/grafana/docker_compose/alertmanager.yaml.j2

@@ -79,7 +79,7 @@ receivers:
   - name: "email-fux-critical"
     email_configs:
       - send_resolved: true
-        to: "stb@lassitu.de"
+        to: "stb@lassitu.de,fux@zimdahl.org"
         from: "alert-manager@hamburg.ccc.de"
         smarthost: "cow.hamburg.ccc.de:587"
         auth_username: "alert-manager@hamburg.ccc.de"

resources/chaosknoten/grafana/docker_compose/compose.yaml.j2

@@ -14,6 +14,7 @@ services:
     volumes:
       - ./configs/prometheus.yml:/etc/prometheus/prometheus.yml
       - ./configs/prometheus_alerts.rules.yaml:/etc/prometheus/rules/alerts.rules.yaml
+      - ./configs/prometheus_alerts-fux.rules.yaml:/etc/prometheus/rules/alerts-fux.rules.yaml
       - prom_data:/prometheus
 
   alertmanager: