[arg_route] Fix pycodestyle complaints

Author: opoplawski

plugins/module_utils/arg_route.py

@@ -17,9 +17,11 @@ def p2o_interface(self, name, params, obj):
 def p2o_interface_without_virtual(self, name, params, obj):
     obj[name] = self.pfsense.parse_interface(params[name], with_virtual=False)
 
+
 def p2o_port(self, name, params, obj):
     obj[name] = self.pfsense.parse_port(params[name], with_virtual=True)
 
+
 def p2o_strip(self, name, params, obj):
     if params[name] is not None:
         obj[name] = params[name].strip()