MDEV-33750: Remove seq in Debian init.d for-loop

Make all init.d script for loops to use new
{1..5} syntax and rework one not to use seq as
all the rest use new Bash syntax.

debian/mariadb-server.mariadb.init

@@ -176,8 +176,21 @@ case "${1:-''}" in
  # Start MariaDB!
  /usr/bin/mariadbd-safe "${@:2}" 2>&1 >/dev/null | $ERR_LOGGER &
 
- for _ in $(seq 1 "${MYSQLD_STARTUP_TIMEOUT:-30}")
+ # Make sure that there is some default
+ # 30 seconds is fine default for starting
+ # maximum is one hour if there is gigantic
+ # database
+ if [ -z "${MYSQLD_STARTUP_TIMEOUT}" ]
+ then
+ MYSQLD_STARTUP_TIMEOUT=30
+ fi
+
+ for i in {1..3600}
  do
+ if [ "${i}" -gt "${MYSQLD_STARTUP_TIMEOUT}" ]
+ then
+ break
+ fi
  sleep 1
  if mariadbd_status check_alive nowarn
  then