[SPARK-21085][SQL] Failed to read the partitioned table created by Spark 2.1

### What changes were proposed in this pull request?
Before the PR, Spark is unable to read the partitioned table created by Spark 2.1 when the table schema does not put the partitioning column at the end of the schema.
[assert(partitionFields.map(_.name) == partitionColumnNames)](https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/interface.scala#L234-L236)

When reading the table metadata from the metastore, we also need to reorder the columns.

### How was this patch tested?
Added test cases to check both Hive-serde and data source tables.

Author: gatorsmile <gatorsmile@gmail.com>

Closes #18295 from gatorsmile/reorderReadSchema.