Using Flags instead of PersistentFlags, as Kubernetes flags seem not to be defined in the "persistent space".
Using Flags instead of PersistentFlags, as Kubernetes flags seem not to be defined in the "persistent space".

Signed-off-by: Silvin Lubecki <401770a0308861deccc8b11ddc198194637c848d@docker.com>

cpuguy83/cli,cpuguy83/cli,docker/cli,thaJeztah/cli,thaJeztah/cli,dnephin/cli,docker/cli,dnephin/cli