EchoLee5

Results 3 issues of EchoLee5

## Purpose of this pull request When writing to the target table fails for some reason, for example, the target table does not exist. The internal call sequence of JdbcOutputFormat...

bug
First-time contributor
connectors-v2
approved
reviewed

Current binlog offset add serverId, fix incremental-snapshot scan data lose link https://github.com/ververica/flink-cdc-connectors/issues/2794

mysql-cdc-connector
mysql-pipeline-connector

Fix the problem of JdbcOutputFormat database connection leak

component=Connectors/JDBC