* upgrade K8s dependency to v0.21
* update CRD for new version of controller-runtime
* fix ci component revision create must fill Raw in runtime.RawExtension
* try fix test
* start control plane timeout set to 1min and fix tests
* add timeout for env test start and stop
* longer timeout time for BeforeSuit function
* upgrade kubebuilder and k8s cluster version to match with v1.21.2 in github action
* fix test
* fix resource tracker ownerRef override
* update developer guides
* enhance `addon enable` command
* fix: initializer requeue twice
fix: initializer won't update status while checking dependency
* not delete ns while disable addon
* add init delete webhook and test
* use poll func
* fix get init logic
* fix get init logic
* fix CI
* fix CI
* unfocus
* check diff
* CI