[SPARK-18726][SQL] resolveRelation for FileFormat DataSource don't need to listFiles twice

## What changes were proposed in this pull request?

Currently when we resolveRelation for a `FileFormat DataSource` without providing user schema, it will execute `listFiles`  twice in `InMemoryFileIndex` during `resolveRelation`.

This PR add a `FileStatusCache` for DataSource, this can avoid listFiles twice.

But there is a bug in `InMemoryFileIndex` see:
 [SPARK-19748](https://github.com/apache/spark/pull/17079)
 [SPARK-19761](https://github.com/apache/spark/pull/17093),
so this pr should be after SPARK-19748/ SPARK-19761.

## How was this patch tested?
unit test added

Author: windpiger <songjun@outlook.com>

Closes #17081 from windpiger/resolveDataSourceScanFilesTwice.