Add Restic SFTP Support

[Jonnobrow]

Describe what this PR does

Adds support for Restic SFTP.

Is there anything that requires special attention?

N/A

Related issues:

• Support SFTP destinations in Restic #671

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Jonnobrow
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[openshift-ci]

Hi @Jonnobrow. Thanks for your PR.

I'm waiting for a backube member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed in 30 days if no further activity occurs. Thank you for your contributions.

[tesshuflower]

@Jonnobrow does #1778 help at all with your use-case with restic SFTP?