Auto-generated via:
git grep -l [Ss]uccesfully | xargs sed -ri 's/([sS])uccesfully/\1uccessfully/g'
I noticed this when running kube-scheduler with --v4 and it is annoying.
Then manually reverted changed to the vendored bits.
This commit updates the code to set the default value of the readOnly attribute to false.
It also updates the example docs to add full list of supported plugin attributes and doc.
