Support Spark Driver Configs in UI

[xuwenyihust]

trafficstars

Existing Design

Features to Develop

Add support for

• [ ] spark.driver.cores
• [ ] spark.driver.memory

The above configs should display under notebook's Config tab, and display default values if not specifically set

Should also support updating these configs, and save values into DB for the associated notebook.

For the actually taking effect of spark configuration is out of this issue's scope.