Move development reqirements to dev-requirements.txt
Description
In some cases, such as when working inside a virtual environment, it can
be desirable to install all dependencies for running tests using pip.
This is currently not possible since setuptools does not support
installing these dependencies in a virtual environment (by design).
(See https://stackoverflow.com/a/21003259.)
To circumvent this issue, move such requirements to
dev-requirements.txt file that can be used easily with
pip install -r. This also enables tests to be run directly using
pytest, which can be more convenient than -addopts approach when one
needs to add multiple options.
This will also be useful in creating better testuite images, and fix some of the issues noticed in buildstream-docker-images!56 (merged).
Changes proposed in this merge request:
- Move development reqirements to dev-requirements.txt