19b9f685b5
When creating a virtualenv with Python 3.6.8 using the --system-site-packages option and pip>=19.0.0 a bug affects the virtualenv breaking pep build isolation. This patch downgrade pip to version 19.0.0 as a workaround. Also converts pip3 command to pip. See [1] for more info. [1] https://github.com/pypa/pip/issues/6264 Change-Id: I738d7c2e50914a773920e5381305e8c5131ccd5f