Backport of removed deprecated patchesStrategicMerge into release/1.0.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #2894 to be assessed for backporting due to the inclusion of the label backport/1.0.x.

🚨

Warning automatic cherry-pick of commits failed. If the first commit failed,
you will see a blank no-op commit below. If at least one commit succeeded, you
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The person who merged in the original PR is:
@wilkermichael
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.

merge conflict error: POST https://api.github.com/repos/hashicorp/consul-k8s/merges: 409 Merge conflict []

The below text is copied from the body of the original PR.

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Changes proposed in this PR:

• Removed some more deprecated uses of patchesStrategicMerge added after Thomas's PR to remove the majority Update Kustomize to use patches instead of patchesStrategicMerge #2786

@t-eckert Thanks for the script :)
How I've tested this PR:

How I expect reviewers to test this PR:

Checklist:

• Tests added
• CHANGELOG entry added

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Overview of commits

• a01205e - b580105

[hashicorp-cla]

All committers have signed the CLA.