Bump up timeout on pipeline-wrapper filter to 5000ms.

The test sometimes takes longer than 2500ms on Travis.
Increasing to 5000s even though 3000ms might be enough,
as I don't want to have to keep bumping it up in the future.
Merge pull request #70 from inolen/feature/longer-travis-timeout

Bump up timeout on pipeline-wrapper filter to 5000ms.