- Original patch was contributed by Jani Tolonen <jani.k.tolonen@gmail.com>
https://github.com/an3l/server/commits/bb-10.3-anel-MDEV-21786-dump-sequence
which distinguishes data structure (linked list) of sequences from
tables.
- Added standard sql output to prevent future changes
of sequences and disabled locks for sequences.
- Added test case for `MDEV-20070: mysqldump won't work correct on
sequences` where table column depends on sequence value.
- Restore sequence last value in the following way:
  - Find `next_not_cached_value` and use it to `setval()`
  - We just need for logical restore, so don't execute `setval()`
  - `setval()` should be showed also in case of `--no-data` option.

Reviewed-by: daniel@mariadb.org