The latest Fedora/Ubuntu images don't ship python2 by default, so we
need to use our dib-python wrapper for this so we work in python3 only
environments.
This change also correctly creates the pip.conf and .pydistutils.cfg
files with trusted host extracted from the index-url.
Related-bug: 1577105
Change-Id: Ibb5348af3e3bbe46b19affe90a8930a4b4ad4cad
Signed-off-by: Maksim Malchuk <maksim.malchuk@gmail.com>
