Purpose of this pull request

This PR try to do two things:

1. Fix mysql create index with blob series field type. We should add index size when create index. Please refer https://stackoverflow.com/questions/1827063/mysql-error-key-specification-without-a-key-length
2. We should do some clean when get primary/constraint keys name. Because the upstream may be a different database, sometimes these names may contain strange characters. We need to clean these characters to ensure that the downstream can create corresponding indexes as much as possible.

Does this PR introduce any user-facing change?

Yes, the index name changed sometimes. But I think it's not a big deal.

How was this patch tested?

add new test.

Check list

• If any new Jar binary package adding in your PR, please add License Notice according
  New License Guide
• If necessary, please update the documentation to describe the new feature. https://github.com/apache/seatunnel/tree/dev/docs
• If you are contributing the connector code, please check that the following files are updated:
  1. Update change log that in connector document. For more details you can refer to connector-v2
  2. Update plugin-mapping.properties and add new connector information in it
  3. Update the pom file of seatunnel-dist
• Update the release-note.