A content-set.yml file needs to be added to each container repo before April 16, otherwise it will not be possible to build the image in our build system.

Detailed info:

Wiki: https://docs.engineering.redhat.com/display/HSSP/New+container+image+configuration+to+be+stored+in+dist-git%3A+content+sets
Video overview: http://file.brq.redhat.com/~sochotni/content-set-pms-2018-03-05_09.46.03.mkv
Presentation: https://docs.google.com/presentation/d/1lwc4uTKvRAB25MjV4VhhnnxPlfETzrYspZg3SKivxC8/edit#slide=id.g2d530b08e7_0_0