fix(grafana): provision data sources with static uids

log-analyser/grafana-provisioning/datasources/datasource_loki.yml

@@ -2,8 +2,8 @@ apiVersion: 1
 
 datasources:
   - name: Loki
-    isDefault: true
     type: loki
+    uid: a4bdfb3e-762a-46e5-a79f-2e7bbe88d444
     access: proxy
     url: http://loki:3100
     editable: true
@@ -11,9 +11,9 @@ datasources:
 
   - name: Prometheus
     type: prometheus
+    uid: d301145e-8c4e-4027-bf6e-43e81f095020
     access: proxy
     url: http://prometheus:9090
-    isDefault: true
     editable: true
     jsonData:
       timeInterval: "5s"