Support Kustomize directories

[dhaiducek]

Addresses:

• https://github.com/stolostron/backlog/issues/25290

[openshift-ci[bot]]

Skipping CI for Draft Pull Request. If you want CI signal for your change, please convert it to an actual PR. You can still manually trigger a test run with /test all

[dhaiducek]

/hold for reviews and #66

[JustinKuli]

One concern that had come up from us calling kustomize from our plugin (which is itself called from kustomize) was "what if one of the kustomizations we try to use ends up calling another plugin, and we get into a loop that kustomize can't recognize?" (Note that @dhaiducek reported that kustomize will notice if kustomization.yaml files end up calling each other in a loop). We shouldn't need to worry about that - no plugins can be called without enabling alpha plugins explicitly. See https://kubectl.docs.kubernetes.io/guides/extending_kustomize/#required-alpha-flags

Based on the above doc, the only plugins that would be able to run in the ACM application environment is ones that are specially installed (like this plugin). No "in-repo" exec plugins would be able to run without the --enable-exec flag, and container plugins would likely not be able to run without a container runtime.

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

88.2% Coverage
0.0% Duplication

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dhaiducek, JustinKuli, mprahl

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/stolostron/policy-generator-plugin/blob/main/OWNERS)~~ [JustinKuli,dhaiducek,mprahl] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[mprahl]

/unhold