register podopslifecycle webhook

[shaofan-hs]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• N
• Y

re #11 #28 #21

2. What is the scope of this PR (e.g. component or file name):

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Other

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• N
• Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• Unit test
• Integration test
• Benchmark (add benchmark stats below)
• Manual test (add detailed scripts or steps below)
• Other

6. Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[Eikykun]

func (lc *OpsLifecycle) Validating(ctx context.Context, c client.Client, oldPod, newPod *corev1.Pod, operation admissionv1.Operation) error {
	if !utils.ControlledByPodOpsLifecycle(newPod) {
		return nil
	}
	allPrefix := sets.NewString()
	for label := range newPod.Labels {

		s := strings.Split(label, "/")
		if len(s) != 2 {
			return fmt.Errorf("invalid label %s", label)
		}
		prefix, id := s[0], s[1]
		allPrefix.Insert(prefix)
		for _, v := range pairLabelPrefixesMap { // labels must exist together and have the same id
			if prefix != v {
				continue
			}
			if id != "" {
				pairLabel := fmt.Sprintf("%s/%s", pairLabelPrefixesMap[v], id)
				_, ok := newPod.Labels[pairLabel]
				if !ok {
					return fmt.Errorf("not found label %s", pairLabel)
				}
			}
		}
	}
	for prefix := range allPrefix {
		pair := coexistingLabelPrefixesMap[prefix]
		if pair != "" && !allPrefix.Has(pair) {
			return fmt.Errorf("not found the expected label prefixes: %v", pair)
		}
	}
	return nil
}