[SPARK-15620][SQL] Fix transformed dataset attributes revolve failure

## What changes were proposed in this pull request?

Join on transformed dataset has attributes conflicts, which make query execution failure, for example:

```
val dataset = Seq(1, 2, 3).toDs
val mappedDs = dataset.map(_ + 1)

mappedDs.as("t1").joinWith(mappedDs.as("t2"), $"t1.value" === $"t2.value").show()
```

will throw exception:

```
org.apache.spark.sql.AnalysisException: cannot resolve '`t1.value`' given input columns: [value];
  at org.apache.spark.sql.catalyst.analysis.package$AnalysisErrorAt.failAnalysis(package.scala:42)
  at org.apache.spark.sql.catalyst.analysis.CheckAnalysis$$anonfun$checkAnalysis$1$$anonfun$apply$2.applyOrElse(CheckAnalysis.scala:62)
  at org.apache.spark.sql.catalyst.analysis.CheckAnalysis$$anonfun$checkAnalysis$1$$anonfun$apply$2.applyOrElse(CheckAnalysis.scala:59)
  at org.apache.spark.sql.catalyst.trees.TreeNode$$anonfun$transformUp$1.apply(TreeNode.scala:287)
  at org.apache.spark.sql.catalyst.trees.TreeNode$$anonfun$transformUp$1.apply(TreeNode.scala:287)
```

## How was this patch tested?

Unit test.

Author: jerryshao <sshao@hortonworks.com>

Closes #13399 from jerryshao/SPARK-15620.