Fix issues with replacements

[natasha41575]

First commit demonstrates #3927, second demonstrates #3928.

Third commit fixes #3927, fourth fixes #3928.

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[monopole]

@natasha41575 Excellent job in the first commit establishing issue behavior, and then fixing it in a subsequent commit.

[monopole]

/lgtm
Thanks!

[616b2f]

Does it also fixes this kind of issues?

source:
  kind: ConfigMap
  name: my-config
  fieldPath: data.my-var
targets:
- select:
    name: my-service
    kind: Service
  fieldPaths:
  - metadata.annotations.["service.beta.kubernetes.io/load-balancer-abc"]

Because this also does not seem to work with kustomize v4.1.3

[natasha41575]

@616b2f No it does not. I will work on that. Filed a tracking issue #3983, thank you for using and trying out the feature!

[natasha41575]

@616b2f just as an FYI this PR does provide functionality to escape your delimiters, e.g. service\.beta\.kubernetes\.io/load-balancer-abc, but I have also submitted another PR so that you can use surrounding brackets too.

[616b2f]

@natasha41575 thank you for clarification and opening the new bug.

Btw. I love the new feature you implemented, it's really saved us a lot of pain.