Mcdan/jdk 11 build

[mcdan]

Description

Related issue and scope

• I opened an issue to propose and discuss this change (#????)

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.

[codecov-io]

Codecov Report

Merging #7 into master will increase coverage by 0.72%.
The diff coverage is 89.13%.

@@            Coverage Diff             @@
##           master       #7      +/-   ##
==========================================
+ Coverage   84.46%   85.19%   +0.72%     
==========================================
  Files         196      197       +1     
  Lines        8801     8839      +38     
  Branches      602      619      +17     
==========================================
+ Hits         7434     7530      +96     
+ Misses       1367     1309      -58

Impacted Files	Coverage Δ
...openwhisk/common/tracing/OpenTracingProvider.scala	21.15% <ø> (ø)	⬆️
...e/loadBalancer/ShardingContainerPoolBalancer.scala	88.7% <ø> (ø)	⬆️
...che/openwhisk/core/loadBalancer/LeanBalancer.scala	0% <ø> (ø)	⬆️
...apache/openwhisk/core/entitlement/Collection.scala	87.5% <ø> (ø)	⬆️
...abase/cosmosdb/CosmosDBArtifactStoreProvider.scala	57.69% <ø> (ø)	⬆️
...scala/org/apache/openwhisk/common/UserEvents.scala	66.66% <ø> (ø)	⬆️
...rg/apache/openwhisk/core/controller/Triggers.scala	94.16% <ø> (+0.04%)	⬆️
.../openwhisk/core/entity/ActivationEntityLimit.scala	100% <ø> (ø)	⬆️
.../scala/org/apache/openwhisk/core/entity/Exec.scala	90.62% <ø> (ø)	⬆️
...ache/openwhisk/utils/ExecutionContextFactory.scala	100% <ø> (ø)	⬆️
... and 95 more

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