Add WorkflowTest Rule

[mfateev]

Is your feature request related to a problem? Please describe.
WorkflowTestEnvironment requires setup and tear down as well as globalTimeout and watchman setup in each tested class to support troubleshooting.

Describe the solution you'd like
Create @WorkflowTest rule that would encapsulate all of these to simplify code.

Additional context
HelloAsyncLambdaTest that sets both timeout and watchman.

[vitarb]

We need to make test workflow environment that works with docker service.
There is a lot of setup code that we can simplify.

[vitarb]

Addressed as part of #286