This removes all .bazel and .bzl files, and a bunch of scripts relating
to bazel, now that it's been entirely replaced.
There are still a few places where traces could be removed, but this
removes the brunt of the bazel stuff that remains.
Signed-off-by: Ashley Davis <ashley.davis@jetstack.io>
These lean heavily on `go test` for everything possible.
Also adds setup for versionchecker test in make, and a script for
extracting CRDs from templated rendered YAML files
Signed-off-by: Ashley Davis <ashley.davis@jetstack.io>