Rename default branch to main
Based on email discussions, I think @jekstrand suggested we wait for the 21.1 branchpoint. So, is now a good time to try this?
In #4501 (closed) there were some
@dbaker, @eric: Could you look over the script changes in the first 2 patches?
@anholt: Maybe you can check the gitlab ci changes?
Ref: #4501 (closed)