[SPARK-399776][SQL] JOIN verbose string should add Join type

[amahussein]

Spark-context

apache/spark@6bd09ab92c

What changes were proposed in SPARK pull request?

The current verbose string didn't containt join type. This PR adds the join type to the the string.

example

(10) BroadcastHashJoin [codegen id : 4]
Left keys [1]: [ws_sold_date_sk#7]
Right keys [1]: [d_date_sk#9]
Join type: Inner
Join condition: None

Why are the changes needed in Spark?

Add missing information in Join verbosity

Does this PR introduce any user-facing change?

• User will be able to see join type in verbose plan string

Why it might affect RAPIDS?

• Currently, We define GpuCartesianProductExec.verboseStringWithOperatorId() that shows the join condition. We can add Join type:... to that string.

• Tools Profiling/Qualification can use the extra information to improve the analysis of RAPIDS support. See RAPIDS-6064: Qualification tool support parsing expressions part-2

Impact on Testing?

NA.

Requires Doc update?

No.