Make runtime delete timeout configurable

[ningyougang]

Description

In kubenetes env, if runtime pod number is big and akka.coordinated-shutdown.phases.actor-system-terminate_timeout is low(e.g default value is 30 s), this may lead to the runtime pods are not deleted completely after execute helm delete/uninstall xxx, because when timeout happens, the cleanup is not executed finished.

In such a case, need to increase relative timeout value, it is better to make these timeout value configurable.

Another brother pr: apache/openwhisk-deploy-kube#653

Related issue and scope

• I opened an issue to propose and discuss this change (#????)
  prewarm runtime pods are not completely deleted openwhisk-deploy-kube#652

My changes affect the following components

• API
• Controller
• Message Bus (e.g., Kafka)
• Loadbalancer
• Invoker
• Intrinsic actions (e.g., sequences, conductors)
• Data stores (e.g., CouchDB)
• Tests
• Deployment
• CLI
• General tooling
• Documentation

Types of changes

• Bug fix (generally a non-breaking change which closes an issue).
• Enhancement or new feature (adds new functionality).
• Breaking change (a bug fix or enhancement which changes existing behavior).

Checklist:

• I signed an Apache CLA.
• I reviewed the style guides and followed the recommendations (Travis CI will check :).
• I added tests to cover my changes.
• My changes require further changes to the documentation.
• I updated the documentation where necessary.

[dgrove-oss]

LGTM

[jiangpengcheng]

LGTM

[codecov-io]

Codecov Report

Merging #5028 (c9b3445) into master (526f011) will decrease coverage by 6.96%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #5028      +/-   ##
==========================================
- Coverage   83.85%   76.88%   -6.97%     
==========================================
  Files         202      202              
  Lines        9817     9818       +1     
  Branches      415      416       +1     
==========================================
- Hits         8232     7549     -683     
- Misses       1585     2269     +684     

Impacted Files	Coverage Δ
...erpool/kubernetes/KubernetesContainerFactory.scala	0.00% <0.00%> (ø)
...core/database/cosmosdb/RxObservableImplicits.scala	0.00% <0.00%> (-100.00%)	⬇️
...ore/database/cosmosdb/cache/CacheInvalidator.scala	0.00% <0.00%> (-100.00%)	⬇️
...e/database/cosmosdb/cache/ChangeFeedConsumer.scala	0.00% <0.00%> (-100.00%)	⬇️
...core/database/cosmosdb/CosmosDBArtifactStore.scala	0.00% <0.00%> (-95.85%)	⬇️
...sk/core/database/cosmosdb/CosmosDBViewMapper.scala	0.00% <0.00%> (-93.90%)	⬇️
...tabase/cosmosdb/cache/CacheInvalidatorConfig.scala	0.00% <0.00%> (-92.31%)	⬇️
...enwhisk/connector/kafka/KamonMetricsReporter.scala	0.00% <0.00%> (-83.34%)	⬇️
...e/database/cosmosdb/cache/KafkaEventProducer.scala	0.00% <0.00%> (-78.58%)	⬇️
...whisk/core/database/cosmosdb/CosmosDBSupport.scala	0.00% <0.00%> (-74.08%)	⬇️
... and 12 more

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