Remove --upgrade-info option from mysql_upgrade

Removed the option as it safe to always create the file when we have
created the MariaDB data directories. This fixes this issue not only
for debian but for all MariaDB users.

debian/mariadb-server-10.2.postinst

@@ -144,7 +144,7 @@ EOF
     # Debian: beware of the bashisms...
     # Debian: can safely run on upgrades with existing databases
     set +e
-    bash /usr/bin/mysql_install_db --rpm --cross-bootstrap --user=mysql --disable-log-bin --upgrade-info 2>&1 | $ERR_LOGGER
+    bash /usr/bin/mysql_install_db --rpm --cross-bootstrap --user=mysql --disable-log-bin 2>&1 | $ERR_LOGGER
     set -e
 
     ## On every reconfiguration the maintenance user is recreated.

man/mysql_install_db.1

@@ -276,21 +276,6 @@ This must be given as the first argument\&.
 .sp -1
 .IP \(bu 2.3
 .\}
-.\" mysql_install_db: upgrade-info option
-.\" upgrade-info option: mysql_install_db
-\fB\-\-upgrade\-info\fR
-.sp
-This places a mysql_upgrade_info file containing the server version in the data directory\&.
-.RE
-.sp
-.RS 4
-.ie n \{\
-\h'-04'\(bu\h'+03'\c
-.\}
-.el \{\
-.sp -1
-.IP \(bu 2.3
-.\}
 .\" mysql_install_db: rpm option
 .\" rpm option: mysql_install_db
 \fB\-\-rpm\fR

scripts/mysql_install_db.sh

@@ -42,7 +42,6 @@ create database if not exists test;
 use mysql;"
 auth_root_authentication_method=normal
 auth_root_socket_user='root'
-upgrade_info=0
 
 dirname0=`dirname $0 2>/dev/null`
 dirname0=`dirname $dirname0 2>/dev/null`
@@ -104,7 +103,6 @@ Usage: $0 [OPTIONS]
                        group. You must be root to use this option.  By default
                        mysqld runs using your current group and files and
                        directories that it creates will be owned by you.
-  --upgrade-info       Store mysql_upgrade_info in the installed data directory.
 
 All other options are passed to the mysqld program
 
@@ -160,7 +158,6 @@ parse_arguments()
       --skip-name-resolve) ip_only=1 ;;
       --verbose) verbose=1 ; silent_startup="" ;;
       --rpm) in_rpm=1 ;;
-      --upgrade-info) upgrade_info=1 ;;
       --help) usage ;;
       --no-defaults|--defaults-file=*|--defaults-extra-file=*)
         defaults="$arg" ;;
@@ -528,10 +525,7 @@ SET @auth_root_socket='$auth_root_socket_user';" ;;
 esac
 if { echo "$install_params"; cat "$create_system_tables" "$create_system_tables2" "$fill_system_tables" "$fill_help_tables" "$maria_add_gis_sp"; } | eval "$filter_cmd_line" | mysqld_install_cmd_line > /dev/null
 then
-  if test "$upgrade_info" -eq 1
-  then
     printf "@VERSION@-MariaDB" > "$ldata/mysql_upgrade_info"
-  fi
   s_echo "OK"
 else
   echo