Mentioned in #6942
This change allows using the --config flag and a generated configfile to set
options that were not previously supported and the use via flags is deprecated.
(https://kubernetes.io/docs/reference/command-line-tools-reference/kube-scheduler/)
I thought that it might be better to have them in a config file to ensure
support in newer kubernetes versions.
It also makes it easy to add more.
Roberto Rodriguez Alcala