log: read output filter from config file.

The output filter was not read from configuration file and thus
not used in this case.

src/util-debug.c

@@ -1141,6 +1141,8 @@ void SCLogLoadConfig(void)
     if (ConfGet("logging.default-log-format", &sc_lid->global_log_format) != 1)
         sc_lid->global_log_format = SC_LOG_DEF_LOG_FORMAT;
 
+    ConfGet("logging.default-output-filter", &sc_lid->op_filter);
+
     ConfNode *seq_node, *output;
     TAILQ_FOREACH(seq_node, &outputs->head, next) {
         SCLogLevel level = sc_lid->global_log_level;