Document the release process

[mkumatag]

This task is for documenting the release process which involved tagging and publishing the release

/kind feature
/priority important-longterm

[mkumatag]

commands used for tagging:

git tag v0.1-alpha.8
git push origin v0.1-alpha.8

The command for getting the commits:

git log v0.1-alpha.8..v0.1-alpha.9 --oneline | grep -v "Merge pull"

For listing the contributors(used only for the released versions):

git log --pretty=format:"%cN; %ce" v0.1..v0.1.1 | grep -v "Merge pull" | sort | grep -v GitHub | uniq