[SPARK-16236][SQL][FOLLOWUP] Add Path Option back to Load API in DataFrameReader
[SPARK-16236][SQL][FOLLOWUP] Add Path Option back to Load API in DataFrameReader

#### What changes were proposed in this pull request?
In Python API, we have the same issue. Thanks for identifying this issue, zsxwing ! Below is an example:
```Python
spark.read.format('json').load('python/test_support/sql/people.json')
```
#### How was this patch tested?
Existing test cases cover the changes by this PR

Author: gatorsmile <gatorsmile@gmail.com>

Closes #13965 from gatorsmile/optionPaths.

(cherry picked from commit 39f2eb1da34f26bf68c535c8e6b796d71a37a651)
Signed-off-by: Shixiong Zhu <b59cd5ce8cb5ae44d26fc6984be1f84cf74771a7@databricks.com>

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