update file for adding lab

lamp_ubuntu2204_2hosts_withroles/roles/db/templates/my.cnf.j2

@@ -0,0 +1,12 @@
+[mysqld]
+datadir=/var/lib/mysql
+socket=/var/lib/mysql/mysql.sock
+user=mysql
+# Disabling symbolic-links is recommended to prevent assorted security risks
+symbolic-links=0
+port={{ mysql_port }}
+bind-address = 0.0.0.0
+
+[mysqld_safe]
+log-error=/var/log/mysqld.log
+pid-file=/var/run/mysqld/mysqld.pid