mysql_additional: add mariadbd path to file contexts

mysql_additional.fc

@@ -0,0 +1 @@
+/usr/sbin/mariadbd  --      gen_context(system_u:object_r:mysqld_exec_t,s0)

mysql_additional.te

@@ -1,4 +1,4 @@
-policy_module(mysql_additional, 0.0.1)
+policy_module(mysql_additional, 0.0.2)
 
 require {
   type mysqld_t;