unitycatalog-hadoop follow-up works

Comment 1: in this comment: https://github.com/unitycatalog/unitycatalog/pull/1569#discussion_r3307146324, @yili-db suggested us to refactor the CredPropsUtil, so that we can reuse most of the code for all the createXCredProps.

Here is the original comment:

It looks like the framework of all 4 createXCredProps functions are the same, except that each version has a customized way to specify the "identity" when renewCredEnabled==true:

In this function it's .deltaStagingTableId(stagingTableId, location) for all three clouds
In createTableCredProps it's .credentialType(UCHadoopConfConstants.UC_CREDENTIALS_TYPE_TABLE_VALUE).tableId(tableId).tableOperation(tableOp) etc.
So it appears that they can be made a "Base" function that does this framework for all 3 clouds, then each createXCredProps function provide a lambda that sets their customized keys when renewCredEnabled==true?

Comment 2: In this oss-delta's UCDeltaTokenBasedRestClient, we will need a PR to remove the TODO, and file a separate PR to use the latest buildForStagingTable: https://github.com/delta-io/delta/blob/4982fbc8d9d8c7d20106716b2ec8d5a61d53618d/storage/src/main/java/io/delta/storage/commit/uccommitcoordinator/UCDeltaTokenBasedRestClient.java#L215-L227

@yili-db pls help us to file a separate PR to address this in the OSS delta project.

Comment 3: In this UCHadoopConfConstants, we will need to carefully review those hadoop properties: https://github.com/unitycatalog/unitycatalog/blob/bdfbef9af32be7a9d8ab6ccbc93ce8cf83908d0d/connectors/hadoop/src/main/java/io/unitycatalog/hadoop/internal/UCHadoopConfConstants.java#L7

and see what are the keys that used for legacy UC API and what are the for UC Delta API.

Start with CredPropsUtil and the four createXCredProps functions described in the issue, then review connectors/hadoop/src/main/java/io/unitycatalog/hadoop/internal/UCHadoopConfConstants.java. Separately inspect oss-delta's UCDeltaTokenBasedRestClient around buildForStagingTable and the TODO referenced in the issue. Done should include a shared credential-properties structure, the requested Delta follow-up, and a clear separation of legacy UC and UC Delta Hadoop properties.