syslog_additional: add policy module

syslog_additional.te

@@ -0,0 +1,8 @@
+policy_module(syslog_additional, 0.0.1)
+
+require {
+  type syslogd_t;
+  type var_t;
+}
+
+allow syslogd_t var_t:sock_file unlink;