Replicate TKR and OSImage to cleanup cluster during management cluster deletion.

[HanFa]

What this PR does / why we need it

A follow-up of #3724, cherrypicked from #3557

During the management cluster deletion, if the user has brought their own TKR and OSImages, then in the cleanup cluster, the moved Cluster CR will be rejected by the TKR cluster webhook. A sample error looks like,

error: clusters.cluster.x-k8s.io "test-lb-cluster" could not be patched: admission webhook "tkr-resolver-cluster-webhook.tanzu.vmware.com" denied the request: could not resolve TKR/OSImage for controlPlane, machineDeployments: [md-0], q
uery: {controlPlane: {k8sVersionPrefix: 'v1.23.8+vmware.2', tkrSelector: '', osImageSelector: 'oci-region=us-phoenix-1,os-name=ubuntu'}, machineDeployments: [{k8sVersionPrefix: 'v1.23.8+vmware.2', tkrSelector: '', osImageSelector: 'oci-
region=us-phoenix-1,os-name=ubuntu'}]}, result: {controlPlane: {k8sVersion: '', tkrName: '', osImagesByTKR: map[]}, machineDeployments: [{k8sVersion: '', tkrName: '', osImagesByTKR: map[]}]}
You can run `kubectl replace -f /tmp/kubectl-edit-1292888427.yaml` to try this update again.

This is because the TKR Cluster webhook rejects the moved Cluster CR because of lacking the self-brought TKR and OSImages in the cleanup cluster.

Therefore, when performing region deletion, the tanzu CLI should be responsible for replicating the TKR and OSImages that is associated with the moved management cluster. This PR adds this extra step.

Which issue(s) this PR fixes

Fixes #

Describe testing done for PR

With this fix presented at #3557, the Oracle management cluster is able to be deleted successfully and the webhook no longer rejects with moved Cluster.

Release note

package-based-lcm: Replicate TKR and OSImage to cleanup cluster during management cluster deletion.

Additional information

Special notes for your reviewer

[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/3755/20221026030629/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.

[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/3755/20221026183017/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.

[codecov]

Codecov Report

Merging #3755 (e1f3059) into main (7fc5101) will decrease coverage by 0.87%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main    #3755      +/-   ##
==========================================
- Coverage   46.58%   45.70%   -0.88%     
==========================================
  Files         400      425      +25     
  Lines       39710    41336    +1626     
==========================================
+ Hits        18497    18891     +394     
- Misses      19523    20737    +1214     
- Partials     1690     1708      +18     

Impacted Files	Coverage Δ
tkg/client/delete_region.go	0.00% <0.00%> (ø)
tkg/client/init.go	0.00% <0.00%> (ø)
tkg/clusterclient/clusterclient.go	48.49% <0.00%> (-0.85%)	⬇️
tkg/client/machine_deployment_cc.go	70.61% <0.00%> (-0.67%)	⬇️
cmd/cli/plugin/package/main.go	0.00% <0.00%> (ø)
cmd/cli/plugin/cluster/delete.go	12.50% <0.00%> (ø)
cmd/cli/plugin/cluster/main.go	0.00% <0.00%> (ø)
cmd/cli/plugin/cluster/kubeconfig_get.go	8.82% <0.00%> (ø)
...i/plugin/cluster/delete_machinehealthcheck_node.go	16.66% <0.00%> (ø)
cmd/cli/plugin/cluster/get.go	6.27% <0.00%> (ø)
... and 25 more

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[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/3755/20221027051600/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.

[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/3755/20221028214725/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.

[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/3755/20221031011219/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.

[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/3755/20221031044642/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.

[XudongLiuHarold]

LGTM

[imikushin]

LGTM