fix: add new Windows docker.exe location

[shazron]

See docker/for-win#7898
See adobe/aio-cli-plugin-app#304

Description

The Windows docker.exe location has been changed, so the openwhisk.jar will fail to run since the search locations are hard-coded. This PR adds the new path to the search paths.

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

❗ No coverage uploaded for pull request base (master@ef55353). Click here to learn what that means.
The diff coverage is n/a.

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  Coverage          ?   76.31%           
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  Lines             ?     9802           
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  Hits              ?     7480           
  Misses            ?     2322           
  Partials          ?        0           

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[shazron]

The tests pass now (I fixed the Scala formatting).

For reference for others, to fix Scala formatting issues:

./gradlew scalaFmt
# should pass now
./gradlew checkScalaFmt