This automates the generation of package_test.go for any component that
uses mdatagen.
The following configuration can be used to skip or ignore certain funcs:
```yaml
tests:
goleak:
skip: true
tests:
goleak:
ignore:
top:
- "go.opencensus.io/stats/view.(*worker).start"
```
---------
Signed-off-by: Alex Boten <223565+codeboten@users.noreply.github.com>