v-m: Add alerts for Firefly, Paperless, phpipam

_Firefly III_ and _phpipam_ don't export any Prometheus metrics, so we
have to scrape them via the Blackbox Exporter.

Paperless-ngx only exposes metrics via Flower, but since it runs in the
same container as the main application, we can assume that if the former
is unavailable, the latter is as well.

victoria-metrics/scrape.yml

@@ -489,3 +489,36 @@ scrape_configs:
     target_label: __address__
   - source_labels: [__address__]
     target_label: instance
+
+- job_name: firefly-iii
+  metrics_path: /probe
+  params:
+    module:
+    - http
+  static_configs:
+  - targets:
+    - https://firefly.pyrocufflink.blue/
+    - https://receipts.pyrocufflink.blue/
+  relabel_configs:
+  - source_labels: [__address__]
+    target_label: __param_target
+  - source_labels: [__param_target]
+    target_label: instance
+  - target_label: __address__
+    replacement: blackbox-exporter:9115
+
+- job_name: phpipam
+  metrics_path: /probe
+  params:
+    module:
+    - http
+  static_configs:
+  - targets:
+    - phpipam.pyrocufflink.blue
+  relabel_configs:
+  - source_labels: [__address__]
+    target_label: __param_target
+  - source_labels: [__param_target]
+    target_label: instance
+  - target_label: __address__
+    replacement: blackbox-exporter:9115