Scratch using interfaces_override

linux/map.jinja

@@ -210,7 +210,6 @@
             'crit': '5%',
         },
         'netlink': {
-            'interface_override': False,
             'interfaces': [],
             'interface_regex': '^[a-z0-9]+$',
             'ignore_selected': False,

linux/meta/collectd.yml

@@ -4,7 +4,7 @@ local_plugin:
     plugin: netlink
     template: linux/files/collectd_netlink.conf
     ignore_selected: {{ monitoring.netlink.ignore_selected }}
-    {%- if monitoring.netlink.interface_override and monitoring.netlink.interfaces is list %}
+    {%- if monitoring.netlink.interfaces is list and monitoring.netlink.interfaces|length > 0 %}
     {%- set interfaces = monitoring.netlink.interfaces %}
     {%- else %}
     {%- set interfaces = salt['linux_netlink.ls'](monitoring.netlink.interface_regex) %}