fix(restore): set targetip on CVRs after restore is completed

[zlymeda]

Auto-setting of targetip on CVR if openebs.io/restore-completed is found

Pull Request template

Why is this PR required? What issue does it fix?: Currently, users have to set targetip on CVRs after restore. Corresponding change in https://github.com/openebs/velero-plugin/pull/131 will mark CVRs which needs to update the targetip. Changes in this PR will check the annotation and set the targetip.

What this PR does?: Sets targetip on CVRs marked with openebs.io/restore-completed annotation.

Does this PR require any upgrade changes?: No

If the changes in this PR are manually verified, list down the scenarios covered:: make test in velero-plugin repository with changes deployed.

Any additional information for your reviewer? : Mention if this PR is part of any design or a continuation of previous PRs

related velero-plugin PR: https://github.com/openebs/velero-plugin/pull/131 related cstor-operators PR: https://github.com/openebs/cstor-operators/pull/198

Checklist:

• [x] Fixes https://github.com/openebs/velero-plugin/issues/127
• [x] PR Title follows the convention of <type>(<scope>): <subject>
• [x] Has the change log section been updated?
• [ ] Commit has unit tests
• [ ] Commit has integration tests
• [ ] (Optional) Are upgrade changes included in this PR? If not, mention the issue/PR to track:
• [ ] (Optional) If documentation changes are required, which issue on https://github.com/openebs/openebs-docs is used to track them:

[zlymeda]

I rebased with origin/master and squashed commits into single commit