fix: change string in order to make format method work correctly

Author: casperr0

mamonsu/plugins/system/linux/la.py

@@ -4,7 +4,7 @@
 class La(Plugin):
     AgentPluginType = 'sys'
     query_agent = "cat /proc/loadavg | awk '{ print $1 }'"
-    key = 'system.la{}'
+    key = 'system.la{0}'
 
     def run(self, zbx):
         la_1 = open('/proc/loadavg', 'r').read().split(' ')[0]
@@ -13,7 +13,7 @@ def run(self, zbx):
     def items(self, template):
         return template.item({
             'name': 'System load average over 1 minute',
-            'key': self.right_type(self.key, '1'),
+            'key': self.right_type(self.key, var='1'),
             'delay': self.plugin_config('interval')
         })
 
@@ -25,4 +25,4 @@ def graphs(self, template):
     def keys_and_queries(self, template_zabbix):
         result = []
         result.append('system.la.1,{0}'.format(self.query_agent))
-        return template_zabbix.key_and_query(result)
+        return template_zabbix.key_and_query(result)