[SPARK-19945][SQL] add test suite for SessionCatalog with HiveExternalCatalog

## What changes were proposed in this pull request?

Currently `SessionCatalogSuite` is only for `InMemoryCatalog`, there is no suite for `HiveExternalCatalog`.
And there are some ddl function is not proper to test in `ExternalCatalogSuite`, because some logic are not full implement in `ExternalCatalog`, these ddl functions are full implement in `SessionCatalog`(e.g. merge the same logic from `ExternalCatalog` up to `SessionCatalog` ).
It is better to test it in `SessionCatalogSuite` for this situation.

So we should add a test suite for `SessionCatalog` with `HiveExternalCatalog`

The main change is that in `SessionCatalogSuite` add two functions:
`withBasicCatalog` and `withEmptyCatalog`
And replace the code like  `val catalog = new SessionCatalog(newBasicCatalog)` with above two functions

## How was this patch tested?
add `HiveExternalSessionCatalogSuite`

Author: windpiger <songjun@outlook.com>

Closes #17287 from windpiger/sessioncatalogsuit.