Closes https://github.com/ooni/probe/issues/2334.
While there, reinstate integration tests, which were also lost in a previous refactoring. However, only run those tests for linux/amd64 because we can be confident that the Go compiler is WAI for all archs we support.
While there, always use bash for running end-to-end tests.
H/T @ainghazal for discovering and reporting this bug.
This package contains code to contact OONI probe services.
The probe services are HTTPS endpoints distributed across a bunch of data
centres implementing a bunch of OONI APIs. When started, OONI will benchmark
the available probe services and select the fastest one. Eventually all the
possible OONI APIs will run as probe services.