Each Integration Test should close their workflows when finished

[samuel27m]

As part of our Integration Test suite, there are a lot of tests, and all of them create 1 workflow or more, runs assertions, and marks the test as passed.

This has lead to situations where workflows are left open, and then they are trying to interact with another tests worker, which fails the tests. E.g.:

Test1 starts the worker and service
Kicks off 2 workflows
2nd doesn't start, cool, move on, that's what we wanted to test
close the worker and service
workflow might still be running, waiting for workers

Test2 starts the worker and service
Runs its workflow
Waits for a while (for the timeout to happen) inTest2 workflow
The running workflow from Test1 finds a worker running, and kicks off requests
test fails because it didn't expect the call from the other workflow

The solution here is to ensure that each Integration Test closes the workflows it created before finishing.