MDEV-35907 debian-start script fails when using non-standard socket path

consistently use --defaults-extra-file for all command-line tools

Author: vuvova

debian/additions/debian-start

@@ -17,11 +17,11 @@ if [ -f /etc/default/mariadb ]; then
   . /etc/default/mariadb
 fi
 
-MARIADB="/usr/bin/mariadb --defaults-file=/etc/mysql/debian.cnf"
-MYADMIN="/usr/bin/mariadb-admin --defaults-file=/etc/mysql/debian.cnf"
+MARIADB="/usr/bin/mariadb --defaults-extra-file=/etc/mysql/debian.cnf"
+MYADMIN="/usr/bin/mariadb-admin --defaults-extra-file=/etc/mysql/debian.cnf"
 # Don't run full mariadb-upgrade on every server restart, use --version-check to do it only once
 MYUPGRADE="/usr/bin/mariadb-upgrade --defaults-extra-file=/etc/mysql/debian.cnf --version-check --silent"
-MYCHECK="/usr/bin/mariadb-check --defaults-file=/etc/mysql/debian.cnf"
+MYCHECK="/usr/bin/mariadb-check --defaults-extra-file=/etc/mysql/debian.cnf"
 MYCHECK_SUBJECT="WARNING: mariadb-check has found corrupt tables"
 MYCHECK_PARAMS="--all-databases --fast --silent"
 MYCHECK_RCPT="${MYCHECK_RCPT:-root}"