Many integration tests (in `tests/integration`) start out by creating a bunch of temporary files and directories for whatever is being tested (go files, cmake, autotools, etc). This is undesirable because it distracts from the actual thing that we want to check (craft-part's support for those technologies). There are some alternatives to support "test data" in `pytest`. See the rejected PR #272 for an attempt using `pytest-datadir`. We should come to a decision and refactor/cleanup the tests.