refactor: Combined the agent and manager binaries

[Anu-Ra-g]

Refactored the cluster proxy addon. Combined the agent and manager binaries and all the necessary changes.

This PR fixes: #867

[xuezhaojun]

Hi, @Anu-Ra-g Thanks for submiting the PR, could you split the go uprade and binary combination into 2 PRs?

[openshift-ci]

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Anu-Ra-g
Once this PR has been reviewed and has the lgtm label, please assign yue9944882 for approval. For more information see the Code Review Process.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[Anu-Ra-g]

@xuezhaojun I've divided this PR into two PRs. Please take a look.

[openshift-ci]

@Anu-Ra-g: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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[xuezhaojun]

/ok-to-test

[xuezhaojun]

@Anu-Ra-g The PR failed in github checks, would you like to update it?

Also, could you add another main.go, for example, the /cmds/addon-all/main.go, we would like to keep the compitibility, make sure the old dockerfile and makefile commands can still work after the PR merged.

[Anu-Ra-g]

Sorry @xuezhaojun I got busy while going through the ocm repo. I'll update this PR within today itself.

[Anu-Ra-g]

@xuezhaojun Sorry I got a little busy. Can you please review and merge this PR and then I'll fix this one? I'm facing a little issue.

[xuezhaojun]

@Anu-Ra-g No hurry at all, take your time and proceed at your own pace.