upgrade operator SDK from v1.28 to v1.33 (#33)

* upgrade operator SDK from v1.28 to v1.33

* pre-merge

* back to control gen v0.9.2

* Move go/v4 plugin from alpha to stable

General cleanup (#27)

Removed unused functions and constants plus some grammar fixes.

Causes CRD updates because of documentation fixes.

fixes #28

Merge pull request #7 from babysnakes/build-docker-images

Create docker package on github