Fix: add finalizer permission to cluster-proxy.

[xuezhaojun]

Fixes: https://github.com/open-cluster-management-io/ocm/issues/230

Error log:

E1008 07:15:14.237293 1 base_controller.go:159] "addon-deploy-controller" controller failed to sync "local-cluster/cluster-proxy", err: Operation cannot be fulfilled on managedclusteraddons.addon.open-cluster-management.io "cluster-proxy": the object has been modified; please apply your changes to the latest version and try again
E1008 07:15:14.247988 1 base_controller.go:159] "addon-deploy-controller" controller failed to sync "local-cluster/cluster-proxy", err: manifestworks.work.open-cluster-management.io "addon-cluster-proxy-deploy-0" is forbidden: cannot set blockOwnerDeletion if an ownerReference refers to a resource you can't set finalizers on: , <nil>
E1008

[codecov[bot]]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (366272a) 23.31% compared to head (767d2fb) 23.31%. Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #168 +/- ## ======================================= Coverage 23.31% 23.31% ======================================= Files 9 9 Lines 1175 1175 ======================================= Hits 274 274 Misses 885 885 Partials 16 16 ``` | [Flag](https://app.codecov.io/gh/open-cluster-management-io/cluster-proxy/pull/168/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-cluster-management-io) | Coverage Δ | | |---|---|---| | [unit](https://app.codecov.io/gh/open-cluster-management-io/cluster-proxy/pull/168/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-cluster-management-io) | `23.31% <71.42%> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-cluster-management-io#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files](https://app.codecov.io/gh/open-cluster-management-io/cluster-proxy/pull/168?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-cluster-management-io) | Coverage Δ | | |---|---|---| | [pkg/proxyagent/agent/agent.go](https://app.codecov.io/gh/open-cluster-management-io/cluster-proxy/pull/168?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-cluster-management-io#diff-cGtnL3Byb3h5YWdlbnQvYWdlbnQvYWdlbnQuZ28=) | `88.59% <100.00%> (ø)` | | | [...yserver/controllers/service\_resolver\_controller.go](https://app.codecov.io/gh/open-cluster-management-io/cluster-proxy/pull/168?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-cluster-management-io#diff-cGtnL3Byb3h5c2VydmVyL2NvbnRyb2xsZXJzL3NlcnZpY2VfcmVzb2x2ZXJfY29udHJvbGxlci5nbw==) | `0.00% <0.00%> (ø)` | |

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[xuezhaojun]

/assign @qiujian16

[qiujian16]

/approve /lgtm

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

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