dhcp: add dhcp scope stats

docs/collector.net.md

@@ -19,6 +19,10 @@ If given, an interface name needs to match the include regexp in order for the c
 
 If given, an interface name needs to *not* match the exclude regexp in order for the corresponding metrics to be reported
 
+### `--collector.net.enabled`
+
+Comma-separated list of collectors to use. Defaults to all, if not specified.
+
 ## Metrics
 
 Name | Description | Type | Labels

docs/collector.netframework.md

@@ -10,7 +10,9 @@ The netframework collector exposes metrics about dotnet framework.
 
 ## Flags
 
-None
+### `--collector.netframework.enabled`
+
+Comma-separated list of collectors to use. Defaults to all, if not specified.
 
 ## Metrics