Daniel Nephin e60bb9f102 test: Remove t.Parallel() from agent/structs tests
go test will only run tests in parallel within a single package. In this case the package test run time is exactly the same with or without t.Parallel() (~0.7s).

In generally we should avoid t.Parallel() as it causes a number of problems with `go test` not reporting failure messages correctly. I encountered one of these problems, which is what prompted this change.  Since `t.Parallel` is not providing any benefit in this package, this commit removes it.

The change was automated with:

    git grep -l 't.Parallel' | xargs sed -i -e '/t.Parallel/d'
2020-05-08 14:06:10 -04:00
..
2020-02-11 15:19:16 +00:00
2020-03-31 16:13:44 -04:00