🌱 Bump controller-tools to v0.12.1

[sbueringer]

What this PR does / why we need it:
Bumps controller-gen to fix the non-deterministic YAML generation.

Thx very much to @ntoofu for fixing the issue in controller-tools (kubernetes-sigs/controller-tools#792)

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #1757
Fixes #1928

Special notes for your reviewer:

Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

Release note:

[sbueringer]

/assign @randomvariable

/cc @chrischdi @killianmuldoon

[sbueringer]

I think we should consider cherry-picking this into all branches (if easily doable)

[sbueringer]

These changes are expected:

// TypedLocalObjectReference contains enough information to let you locate the
// typed referenced object inside the same namespace.
// +structType=atomic
type TypedLocalObjectReference struct {
	// APIGroup is the group for the resource being referenced.
	// If APIGroup is not specified, the specified Kind must be in the core API group.
	// For any other third-party types, APIGroup is required.
	// +optional
	APIGroup *string `json:"apiGroup" protobuf:"bytes,1,opt,name=apiGroup"`
	// Kind is the type of resource being referenced
	Kind string `json:"kind" protobuf:"bytes,2,opt,name=kind"`
	// Name is the name of resource being referenced
	Name string `json:"name" protobuf:"bytes,3,opt,name=name"`
}

[chrischdi]

/lgtm

Did re-run the script successfully with 200 times no diff :-) 🎉 We're back to deterministic output 😄

cd hack/tools
rm bin/controller-gen
make controller-gen
cd ../..
function test:generate() {
  rm -rf tmp tmp2
  mkdir -p tmp tmp2
  eval $CONTROLLER_GEN ${1}
  for i in {1..100}; do
    printf "> %02d\n" "$i";
    eval $CONTROLLER_GEN ${1}2
    diff tmp${2} tmp2${2} || break
  done
}

CONTROLLER_GEN="$(pwd)/hack/tools/bin/controller-gen"
GENARGS="paths=./apis/v1alpha3 \
    paths=./apis/v1alpha4 \
    paths=./apis/v1beta1 \
    crd:crdVersions=v1 \
    output:crd:dir=tmp"

test:generate ${GENARGS}

[sbueringer]

Thx for verifying and thx for investigating this issue!

[yastij]

/approve

[k8s-ci-robot]

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