HNC: Restore the workaround for "envtest failure with unserved versions" bug

[yiqigao217]

See controller-runtime bug kubernetes-sigs/controller-runtime#1154

Currently we work around this bug by

1. Having a script (hack/crd_patches/ensure-all-served-for-envtest.sh) to generate a separate copy of the CRDs with all versions set to served in manifests/envtest directory;
2. Updating the CRDDirectoryPaths in internal/reconcilers/suite_test.go to manifests/envtest.

After the bug is fixed in controller-runtime, we should remove the script and set CRDDirectoryPaths back to config/crd/bases.

[yiqigao217]

/cc @adrianludwin
/cc @GinnyJI

[GinnyJI]

/assign @GinnyJI

[fejta-bot]

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[yiqigao217]

/remove-lifecycle stale

It should be ready to restore the workaround since kubernetes-sigs/controller-runtime#1189 is ready in https://github.com/kubernetes-sigs/controller-runtime/releases/tag/v0.7.0 and we have updated our controller-runtime module to v0.7.0.

[yiqigao217]

(The workaround to restore was in #1074)