Draft: Loki: Collect Tahoe corruption advisories

Fixes privatestorageops#287

Collect Tahoe corruption advisories

Slurping in all Tahoe corruption advisories into our central monitoring enables doing statistics over them and hopefully also easily correlating connected events over various storage nodes. Simple counting and getting a rate of this included.

From JP's assessment of privacy implications here I would accept the burden of additional PI/data in our central monitoring system - which is rotated out after 1 month anyway (as per policy).

morph/lib/monitoring.nix

@@ -59,7 +59,6 @@ in {
       '';
     };
 
-
     googleOAuthClientID = lib.mkOption {
       type = lib.types.str;
       default = "";
@@ -153,10 +152,11 @@ in {
       inherit nodeExporterTargets;
       inherit (cfg) paymentExporterTargets blackboxExporterHttpsTargets;
       nginxExporterTargets = [];
+      lokiExporterTargets = [];
     };
 
     services.private-storage.monitoring.grafana = {
-      inherit (cfg) googleOAuthClientID enableSlackAlert ;
+      inherit (cfg) googleOAuthClientID enableSlackAlert;
       inherit letsEncryptAdminEmail;
       domains = cfg.monitoringDomains;
     };