Related to:
- https://review.opendev.org/#/c/723044/
- https://governance.openstack.org/tc/goals/selected/ussuri/project-ptl-and-contrib-docs.html

Change-Id: I6e02e68b689176a1a5e6adff0f32adf79ec473cf

This patch initialises the limit repo using oslo-cookiecutter
tools.

Change-Id: Iaf748223fee886d057f40384c080d4dcd7d3ab73