The Evict extension point is not currently in use.
All DefaultEvictor plugin functionality is exposed through Filter and
PreEvictionFilter extension points instead.
Thus, no need to limit the number of evictors enabled.
* Descheduling profile
* Fake plugin + profile unit testing
* Rename Profile config type into DeschedulerProfile
To avoid resamblance with profileImpl
* First run deschedule, then balance extension points
* add v1alpha2 registry based conversion
* test defaults, set our 1st explicit default
* fix typos and dates
* move pluginregistry to its own dir
* remove unused v1alpha2.Namespace type
* move migration code folders, remove switch
* validate internalPolicy a single time
* remove structured logs
* simplify return
* check for nil methods
* properly check before adding default evictor
* add TODO comment
* bump copyright year
