Move S3 connectivity check from cdc cli to cdc server when creating changefeeds with redo log #4122
Description
Is your feature request related to a problem?
Currently, when creating a changefeed with redo enabled, the TiCDC CLI performs a connectivity check to the S3 endpoint. This causes creation to fail in environments where the machine running the CLI does not have direct network access to S3, even though the TiCDC server nodes have the required connectivity.
Describe the feature you'd like
In practice, maybe only the TiCDC server nodes have access to S3. The connectivity validation should therefore be performed by the server nodes themselves during changefeed initialization, not by the CLI during creation.
Describe alternatives you've considered
No response
Teachability, Documentation, Adoption, Migration Strategy
No response