Updating Kryo

[nicknezis]

Updating Kryo to a newer version. Currently 5.0.0-RC9 is the most recent release. It includes the necessary updates that I asked for. It should be production ready. RC9 will most likely be the last RC release before the final 5.0.0.

[nicknezis]

I'm waiting for some feedback on a feature request in Kryo. Also might wait until the official 5.0.0 release because the remaining issue before release is a performance related issue.

[nicknezis]

Waiting on this pull request before this is ready to merge. We will be able to remove the HashSetSerializer once this is incorporated and released as a new Kryo version. EsotericSoftware/kryo#753

[joshfischer1108]

I built from source and ran an ECO topology locally. No issues I could see. Steps to reproduce are below:

$ bazel build --config=darwin scripts/packages:binpkg

$ ./bazel-bin/scripts/packages/heron-install.sh --user

$ heron version
heron.build.git.revision : bb1509bc56a873ffc91c914a8f5f973ab2981718
heron.build.git.status : Clean
heron.build.host : Joshs-MacBook-Pro-2.local
heron.build.time : Sun Aug 16 16:27:24 CDT 2020
heron.build.timestamp : 1597613244000
heron.build.user : joshfischer
heron.build.version : nicknezis/kryo-upgrade

$ heron submit local ~/.heron/examples/heron-eco-examples.jar org.apache.heron.eco.Eco --eco-config-file ~/.heron/examples/heron_wordcount.yaml 

$ tail -f ~/.herondata/topologies/local/joshfischer/heron-simple-wordcount-topology/log-files/container_1_bolt-2_3.log.0

[2020-08-16 17:50:31 -0500] [INFO] org.apache.heron.examples.eco.LogInfoBolt: { }source: bolt-1, stream: default, [bart, 118]  
[2020-08-16 17:50:31 -0500] [INFO] org.apache.heron.examples.eco.LogInfoBolt: { }source: bolt-1, stream: default, [bart, 119]  
[2020-08-16 17:50:31 -0500] [INFO] org.apache.heron.examples.eco.LogInfoBolt: { }source: bolt-1, stream: default, [bart, 120]  

[joshfischer1108]

@nwangtw @huijunw could you check this PR before me merge?