Inject package deprecated in controller-runtime 0.10.0

[charith-elastic]

The inject package is planned for removal in controller-runtime 0.10.0. AFAICT, there's no issue other than this comment and PR.

We only use the inject package directly in dynamic watches. There is no need to use inject there because none of the watch types we use in our code implement inject.Scheme or inject.Mapper anyway.

Unfortunately, controller-runtime still uses the deprecated methods internally and causes a series of warning log message to be output when the operator starts up.

INFO	controller-runtime.injectors-warning	Injectors are deprecated, and will be removed in v0.10.x

There's nothing much we can do to avoid this other than wait for a controller-runtime update.

[charith-elastic]

The log message is getting reverted in kubernetes-sigs/controller-runtime#1382.

[charith-elastic]

Issue to track the deprecation effort: kubernetes-sigs/controller-runtime#1433

[pebrc]

The effort to deprecated inject has stalled. I am closing this issue for now we can reopen when this gains traction again.