[Merge] ~racb/ubuntu-governance-docs:add-dmb-selection-process-policy into ubuntu-governance-docs:main

[Robie Basak]

Thank you!
-- 
https://code.launchpad.net/~racb/ubuntu-governance-docs/+git/ubuntu-governance-docs/+merge/487297
Your team Ubuntu Technical Board is subscribed to branch ubuntu-governance-docs:main.