Bug fix for MySQL bug#61209 "auto_increment_offset != 1 + innodb_autoinc_lock_mode=1 => bulk inserts fail"
Patch and test case by Patryk Pomykalski

mysql-test/suite/innodb/r/innodb-autoinc.result:
  updated test case
storage/innodb_plugin/handler/ha_innodb.cc:
  Fixed that we properly reserve values for auto_increment
storage/xtradb/handler/ha_innodb.cc:
  Fixed that we properly reserve values for auto_increment