common: backup_mysql_database.sh: Remove --databases so dump does not use database name

Increases portability of backups

roles/common/templates/backup_mysql_database.sh

@@ -9,7 +9,7 @@ db="$1";
 file={{ backups_mysql_database_directory | quote }}"/$db/latest.sql.gpg";
 
 # Execution
-mysqldump --opt --databases "$db" |
+mysqldump --opt "$db" |
   pv --quiet --buffer-size 256M |
   gpg --quiet --no-verbose --encrypt --recipient {{ backup_gpg_fingerprint | quote }} --trust-model always > "$file";
 chmod u+r-wx,g+r-wx,o+r-wx "$file";