[LIVY-663][API] exposing job id and session id in livy client

[grarkydev]

What changes were proposed in this pull request?

Exposing job id and session id in livy client.

This change will make recognizing of job state change events' source possible.

[codecov-io]

Codecov Report

Merging #228 into master will decrease coverage by <.01%.
The diff coverage is 71.42%.

@@             Coverage Diff              @@
##             master     #228      +/-   ##
============================================
- Coverage     68.12%   68.12%   -0.01%     
- Complexity      960      963       +3     
============================================
  Files           104      104              
  Lines          5946     5951       +5     
  Branches        899      899              
============================================
+ Hits           4051     4054       +3     
- Misses         1314     1316       +2     
  Partials        581      581

Impacted Files	Coverage Δ	Complexity Δ
api/src/main/java/org/apache/livy/JobHandle.java	100% <ø> (ø)	0 <0> (ø)	⬇️
...c/src/main/java/org/apache/livy/rsc/RSCClient.java	73.05% <0%> (-0.45%)	20 <0> (ø)
...ala/org/apache/livy/scalaapi/LivyScalaClient.scala	83.87% <100%> (+0.53%)	8 <1> (+1)	⬆️
...n/java/org/apache/livy/client/http/HttpClient.java	85.48% <100%> (ø)	15 <1> (ø)	⬇️
...c/main/java/org/apache/livy/rsc/JobHandleImpl.java	74.07% <100%> (+0.99%)	8 <1> (+1)	⬆️
...ava/org/apache/livy/client/http/JobHandleImpl.java	75.45% <100%> (+0.22%)	14 <1> (+1)	⬆️
...cala/org/apache/livy/scalaapi/ScalaJobHandle.scala	51.42% <50%> (-1.52%)	8 <1> (+1)
...a/org/apache/livy/server/ThriftServerFactory.scala	100% <0%> (ø)	0% <0%> (ø)	⬇️
...main/scala/org/apache/livy/server/LivyServer.scala	33.03% <0%> (ø)	11% <0%> (ø)	⬇️
...rc/main/scala/org/apache/livy/utils/SparkApp.scala	76% <0%> (ø)	1% <0%> (ø)	⬇️
... and 23 more

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[jerryshao]

I think such APIs should also be added in Scala and Python Client. Also would you please add some unit tests, thanks.

[celadari]

any updates on this ?

[grarkydev]

@celadari in my opinion it is ready to be merged
@jerryshao should anything else be fixed/updated/changed for acceptance?

[github-actions]

This pull request has been automatically marked as stale because it has had no activity for at least 3 months. If you are still working on this change or plan to move it forward, please leave a comment or push a new commit so we know to keep it open. Otherwise, this PR will be closed automatically in about one month. Thank you for your contribution to Apache Livy!