Enable EventPipe and EventSource Functional Tests

[brianrob]

No description provided.

[nategraf]

The tests called EventSource* should stay disabled on Windows until EventPipe supports events from EventSource. the test called EventSourceTrace will fail on Linux due to microsoft/perfview#461

In order to change which tests run based on OS, the changes are related to runtests.proj (but I can't remember the exact file). Disabling them in tests/src/dirs.proj prevents them from building and therefore will not run on any platform.

[brianrob]

Thanks @nategraf. I have updated issues.targets which allows us to be fairly fine-grained about where the tests are disabled. The CI run will confirm that this works in the CI and I'm validating this locally as well.

[brianrob]

@nategraf, this passed my local runs Windows, Linux and OSX. Do you have any concerns or is this ready for merge?

[nategraf]

Tests ran and passed. Looks good 👍