expose more vars for the mysql setup

vars/main.yml

@@ -2,10 +2,35 @@
 mysql_root_password: "{{mariadb_root_password}}"
 mysql_databases:
   - name: "{{cat_db_name}}"
-    encoding: latin1
-    collation: latin1_general_ci
+    encoding: utf8 # this is default
+    collation: utf8_general_ci # also default, but explicit is better then implicit ;)
 mysql_users:
   - name: "{{cat_db_user}}"
     host: "%"
     password: "{{cat_db_password}}"
     priv: "{{cat_db_name}}.*:ALL"
+
+
+# --------------
+# Listed below are more default values of the mysql setup, these are not changed regularly
+# and thus are not listed in defaults with the "cat_" prefix.
+# If you want to knew all the tiny details of the mysql setup look (here)[https://github.com/geerlingguy/ansible-role-mysql]
+
+# The home directory inside which Python MySQL settings will be stored, which Ansible will use when connecting to MySQL.
+# This should be the home directory of the user which runs this Ansible role.
+# The mysql_user_name and mysql_user_password can be set if you are running this role under a non-root user account and want to set a non-root user.
+mysql_user_home: /root
+mysql_user_name: root
+mysql_user_password: root
+
+# The MySQL root user account details.
+mysql_root_home: /root
+mysql_root_username: root
+#mysql_root_password: root
+
+# Default MySQL connection configuration.
+mysql_port: "3306"
+mysql_bind_address: '0.0.0.0'
+mysql_datadir: /var/lib/mysql
+#mysql_socket: *default value depends on OS* (debian: /var/run/mysqld/mysqld.sock)
+#mysql_pid_file: *default value depends on OS* (debian: /var/run/mysqld/mysqld.pid)