9ee6a67b1b
This patch updates/adds the contributor documentation to follow the guidelines of the Ussuri cycle community goal[1]. [1] https://governance.openstack.org/tc/goals/selected/ussuri/project-ptl-and-contrib-docs.html Story: #2007236 Task: #38554 Change-Id: Ia55e131d6bc50d3f3eda520603f2a63d185a5440