Clear password

src/freedombone-app-ghost

         MARIADB_PASSWORD=$(${PROJECT_NAME}-pass -u root -a mariadb)
         ghost_config=/var/www/${GHOST_DOMAIN_NAME}/htdocs/config.js
         sed -i "s|password :.*|password : '${MARIADB_PASSWORD}',|g" $ghost_config
+        MARIADB_PASSWORD=
 
         systemctl start ghost
         restart_site
     MARIADB_PASSWORD=$(${PROJECT_NAME}-pass -u root -a mariadb)
     ghost_config=/var/www/${GHOST_DOMAIN_NAME}/htdocs/config.js
     sed -i "s|password :.*|password : '${MARIADB_PASSWORD}',|g" $ghost_config
+    MARIADB_PASSWORD=
 
     systemctl start ghost
     restart_site