Do not assume the tests run as jenkins

Use $HOME instead of "/home/jenkins" in the generated configuration
files to let the script be run as a user other than jenkins.

Change-Id: I9413591bb4a7d821382eae6dc3edd1df0c41a5e6
Replace entry_points console_scripts

The console scripts generated by entry_points are too complex for
our needs and make things run slowly in service of a multi-version
install that we don't use.

Instead, install a simple script which just does a direct import.

Change-Id: I1ec46837cea07db514f2fb6338c7bced34a83c4a
Merge "Replace entry_points console_scripts"
Merge "Do not assume the tests run as jenkins"