Remove enabled and disabled admission plugins
Remove enabled and disabled admission plugins

* In k8s 1.11 they are already set by default.
* Allow the end user to be more in control with custom opsfiles to
enable and disable admission plugins

[#155793102]

Signed-off-by: Mark James Hender <06cad015e53832ec406ff07a93cc5d28c4649925@pivotal.io>

jaimegag/kubo-deployment,pivotal-cf-experimental/kubo-deployment,jaimegag/kubo-deployment,pivotal-cf-experimental/kubo-deployment