add snmp exporter from fabbs

defaults/main.yml

@@ -42,6 +42,20 @@ prometheus_agent:
       jobs: {}
     promtail:
       enable: False
+    snmp:
+      enable: False
+      mib_path: /usr/share/snmp/mibs
+      args:
+        "web.listen-address": "[::1]:9116"
+        "config.file": "/etc/prometheus/snmp.yml"
+      # A list of objects containing a single key, either `url` or `file`, e.g.:
+      # - url: https://example.com/path/to/mib
+      # - file: /path/to/mib
+      mibs: []
+      # Generator configuration, see https://github.com/prometheus/snmp_exporter/blob/main/generator/generator.yml
+      config:
+        modules: {}
+      jobs: {}
   scrape_timeout: ~
   scrape_interval: ~
   metrics_path: ~